Video: Entire Bruins arena sings National Anthem

At the beginning of the first sporting event in Boston since the Boston Marathon attack, the entire arena came together to sing the national anthem.

Dori was touched as he watched Boston Bruins and Buffalo Sabres fans come together to sing a spirited tribute to the strength of the Boston community.

“It was really a beautiful moment,” said Dori. “It was spontaneous, they had a singer out on the ice and when he heard 20,000 voices singing as one he lowered his microphone. He knew he was part of a special moment and he let the crowd, and the emotion, take over.”