Jurors see gruesome video of Florida school shooting

Jul 18, 2022, 8:05 PM | Updated: Jul 19, 2022, 4:08 pm

Marjory Stoneman Douglas High School shooter Nikolas Cruz looks up as a witness testifies during th...

Marjory Stoneman Douglas High School shooter Nikolas Cruz looks up as a witness testifies during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)

(Mike Stocker/South Florida Sun Sentinel via AP, Pool)


              Marjory Stoneman Douglas High School shooter Nikolas Cruz looks up as a witness testifies during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz looks down as a witness testifies during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School teacher Michael Powell testifies in court about hearing the the school shooting on the floor above his classroom during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School teacher Michael Powell testifies about hearing the school shooting on the floor above his classroom during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School teacher Dara Hass wipes away tears as she testifies in court about the shooting in her classroom during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Fred Gutenberg, right, a parent of Jaime Gutenberg , and Mitch Dworet, parent of Nicholas Dworet, talk during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz listens during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Fred and Jennifer Gutenberg, parents of Jaime Gutenberg, react during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Linda Beigel Schulman, center, mother of Scott Beigel, is comforted by other victims' family during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz, talks with Assistant Public Defender Tamara Curtis during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Former Marjory Stoneman Douglas student William Olsen points out the defendant, Marjory Stoneman Douglas High School shooter Nikolas Cruz, during the penalty phase of Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. Olsen was the first student to encounter Cruz before his rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Former Marjory Stoneman Douglas student Alexander Dworet describes the gunshot injuries he sustained to the back of his head as he testifies during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz is led into court during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz looks up as a witness testifies during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz looks down as a witness testifies during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School teacher Michael Powell testifies in court about hearing the the school shooting on the floor above his classroom during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School teacher Michael Powell testifies about hearing the school shooting on the floor above his classroom during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School teacher Dara Hass wipes away tears as she testifies in court about the shooting in her classroom during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Fred Gutenberg, right, a parent of Jaime Gutenberg , and Mitch Dworet, parent of Nicholas Dworet, talk during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz listens during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Fred and Jennifer Gutenberg, parents of Jaime Gutenberg, react during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Linda Beigel Schulman, center, mother of Scott Beigel, is comforted by other victims' family during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz, talks with Assistant Public Defender Tamara Curtis during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Former Marjory Stoneman Douglas student William Olsen points out the defendant, Marjory Stoneman Douglas High School shooter Nikolas Cruz, during the penalty phase of Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. Olsen was the first student to encounter Cruz before his rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Former Marjory Stoneman Douglas student Alexander Dworet describes the gunshot injuries he sustained to the back of his head as he testifies during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz is led into court during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz looks up as a witness testifies during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz looks down as a witness testifies during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School teacher Michael Powell testifies in court about hearing the the school shooting on the floor above his classroom during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School teacher Michael Powell testifies about hearing the school shooting on the floor above his classroom during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School teacher Dara Hass wipes away tears as she testifies in court about the shooting in her classroom during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Fred Gutenberg, right, a parent of Jaime Gutenberg , and Mitch Dworet, parent of Nicholas Dworet, talk during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz listens during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Fred and Jennifer Gutenberg, parents of Jaime Gutenberg, react during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Linda Beigel Schulman, center, mother of Scott Beigel, is comforted by other victims' family during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz, talks with Assistant Public Defender Tamara Curtis during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Former Marjory Stoneman Douglas student William Olsen points out the defendant, Marjory Stoneman Douglas High School shooter Nikolas Cruz, during the penalty phase of Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. Olsen was the first student to encounter Cruz before his rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Former Marjory Stoneman Douglas student Alexander Dworet describes the gunshot injuries he sustained to the back of his head as he testifies during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz is led into court during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Fred Gutenberg, right, a parent of Jaime Gutenberg , and Mitch Dworet, parent of Nicholas Dworet, talk during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz listens during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Fred and Jennifer Gutenberg, parents of Jaime Gutenberg, react during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Linda Beigel Schulman, center, mother of Scott Beigel, is comforted by other victims' family during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz, talks with Assistant Public Defender Tamara Curtis during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Former Marjory Stoneman Douglas student William Olsen points out the defendant, Marjory Stoneman Douglas High School shooter Nikolas Cruz, during the penalty phase of Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. Olsen was the first student to encounter Cruz before his rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Former Marjory Stoneman Douglas student Alexander Dworet describes the gunshot injuries he sustained to the back of his head as he testifies during the penalty phase of Marjory Stoneman Douglas High School shooter Nikolas Cruz's trial at the Broward County Courthouse in Fort Lauderdale, Fla., on Tuesday, July 19, 2022. His brother, Nicholas Dworet was also shot, and was killed in the rampage. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings.  (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz is led into court during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale, Fla., Tuesday, July 19, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Mike Stocker/South Florida Sun Sentinel via AP, Pool)
            
              Marjory Stoneman Douglas High School shooter Nikolas Cruz looks on during the penalty phase of his trial at the Broward County Courthouse in Fort Lauderdale on Monday, July 18, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. (Carline Jean/South Florida Sun Sentinel via AP, Pool)
            
              Judge Elizabeth Scherer as the state delivers its opening statement during the penalty phase trial of Nikolas Cruz at the Broward County Courthouse in Fort Lauderdale on Monday, July 18, 2022. Cruz previously plead guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings. Carline Jean/South Florida Sun Sentinel via AP, Pool)
            
              During testimony, family members emotionally exit the courtroom on the first day of the sentencing trial for convicted Parkland school shooter Nikolas Cruz at the Broward County Judicial Complex in downtown Fort Lauderdale, Fla., Monday, July 18, 2022. (Carl Juste/Miami Herald via AP, Pool)
            
              FILE - Fred Guttenberg, the father of slain student Jaime Guttenberg, wipes his eyes as Marjory Stoneman Douglas High School shooter Nikolas Cruz pleads guilty to all 17 counts of premeditated murder and 17 counts of attempted murder in the 2018 shootings, Wednesday, Oct. 20, 2021, at the Broward County Courthouse in Fort Lauderdale, Fla. The deadliest mass shooting in U.S. history ever to make it to trial is finally about to go before a jury. Opening statements are scheduled Monday, July 18, 2022, in Nikolas Cruz's penalty trial. (Amy Beth Bennett/South Florida Sun Sentinel via AP, Pool, File)
            
              FILE - People comfort each other as they sit and mourn at one of seventeen crosses, Feb. 15, 2018, after a candlelight vigil for the victims of the shooting at Marjory Stoneman Douglas High School, in Parkland, Fla. The deadliest mass shooting in U.S. history ever to make it to trial is finally about to go before a jury. Opening statements are scheduled Monday, July 18, 2022, in Nikolas Cruz's penalty trial. (AP Photo/Gerald Herbert, File)
            
              FILE - Suzanne Devine Clark, an art teacher at Deerfield Beach Elementary School, places painted stones at a memorial outside Marjory Stoneman Douglas High School during the one-year anniversary of the school shooting, Thursday, Feb. 14, 2019, in Parkland, Fla. The deadliest mass shooting in U.S. history ever to make it to trial is finally about to go before a jury. Opening statements are scheduled Monday, July 18, 2022, in Nikolas Cruz's penalty trial. (AP Photo/Wilfredo Lee, File)

FORT LAUDERDALE, Fla. (AP) — Jurors in the penalty trial of Florida school shooter Nikolas Cruz viewed graphic video Tuesday of him murdering 17 people as he stalked through a three-story classroom building at Parkland’s Marjory Stoneman Douglas High School four years ago.

The video, compiled from 13 security cameras inside the building, was not shown to the gallery, where parents of many of the victims sat. Shown later to reporters, it depicts Cruz crouching and stalking, firing at anything that moves, down the halls and into classrooms.

He shoots many of his victims at point-blank range, going back to some as they lay wounded on the floor to kill them with a second volley of shots. In one segment, athletic director Chris Hixon burst through a door to confront Cruz, but was wounded and fell. He crawled behind a pillar. Cruz kills him with a blast as he passes.

The 12 jurors and 10 alternates stared intently at their video screens as it played. Many held hands to their faces as they viewed the 15-minute recording, which has no sound.

Some squirmed. One juror looked at the screen, looked up at Cruz with his eyes wide and then returned to the video.

Cruz did not appear to watch the video, exchanging occasional whispers with one of his attorneys.

The video was played over the objection of Cruz’s attorneys, who argued that any evidentiary value it has is outweighed by the emotions it would raise in the jurors. They argued that witness statements of what happened would be sufficient.

Circuit Judge Elizabeth Scherer dismissed the objection, saying a video that accurately reflects Cruz’s crimes does not unfairly prejudice his case. Prosecutors are using the video to prove several aggravating factors, including that Cruz acted in a cold, calculated and cruel manner.

Cruz, 23, pleaded guilty in October to 17 counts of first-degree murder for the Feb. 14, 2018, massacre. The jury must decide if he should be sentenced to death or life without parole for the nation’s deadliest mass shooting to go before a jury.

Later, jurors heard testimony from Christopher McKenna, who was a freshman. He had left his English class to use the bathroom. He exchanged greetings with two students, Luke Hoyer and Martin Duque, as they crossed paths in the first-floor hallway.

McKenna then entered a stairwell and encountered Cruz assembling his AR-15 semiautomatic rifle.

Cruz, who had been expelled from Stoneman Douglas a year earlier, told McKenna, “Get out of here. Things are about to get bad.”

The video shows Cruz opened fire from behind Hoyer, 15, and Duque, 14. They tried to run into their classroom, but the door was locked. Student Ana Martins testified she went to open the door and could see them through the glass.

“They were scared,” she said. A friend pulled her away before she could open the door and Cruz killed the boys and 14-year-old Gina Montalto, who had been studying there.

McKenna sprinted to the parking lot and alerted Aaron Feis, an assistant football coach who doubled as a security guard.

Feis drove his golf cart to the building, but was fatally shot as he opened the door. Cruz then continued through the second floor, where he fired into classrooms but hit no one.

When he reached the third-floor, the video shows, Cruz found students and teachers in the hallway, preparing to evacuate as the first-floor shots had set off the fire alarm. He fired at them as they ran away. Two girls, 18-year-old Meadow Pollack and 14-year-old Cara Loughran, fell wounded. Cruz shot them again as he past, killing them.

Peter Wang, 15, fell mortally wounded by the door. Jaime Guttenberg, 14, made it through the stairwell door before she fell. A teacher hiding behind the door poked her to see if she was still alive, but she didn’t move.

Cruz would soon run past their bodies, out onto the athletic fields and mingle with the fleeing students, speeding past two girls carrying Valentine’s Day balloons. He would be captured about an hour later in a neighborhood 3 miles (5 kilometers) away.

The jurors also heard testimony from English teacher Dara Hass, who had three students killed and several wounded in her classroom when Cruz fired through a window in the door.

“The sound was so loud. The students were screaming,” said Hass, who wept and dabbed her eyes with tissue as she testified. She thought it might be a drill, but then she spotted the body of 14-year-old Alex Schachter, who had been fatally shot at his desk.

“That’s when I saw it wasn’t a drill,” she said. Two 14-year-old girls also died in the classroom: Alaina Petty and Alyssa Alhadeff.

When police arrived and evacuated her students, Hass said she did not want to leave but officers convinced her.

“I wanted to stay with the students who couldn’t go,” she said, referring to Schachter, Petty and Alhadeff.

One student in her class, Alexander Dworet, said he originally thought the loud bangs were the school’s marching band, but then he felt a “hot sensation” on the back of his head where he had been grazed by a bullet and “I realized I was in danger.” He and other students scrambled away from the window, using Hass’ desk as a barrier.

Dworet’s 17-year-old brother, Nick, was across the hall in his Holocaust studies class. Cruz fired into that classroom, too, killing him.

__

An earlier version of this story incorrectly reported that Hass was shown photos of victims’ bodies.

__

Associated Press writer Freida Frisaro in Fort Lauderdale, Florida, contributed to this report.

Copyright © The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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Major Internet Upgrade and Expansion Planned This Year in Washington State

Comcast is investing $280 million this year to offer multi-gigabit Internet speeds to more than four million locations.

Jurors see gruesome video of Florida school shooting