William at 40: A milestone birthday in a life under scrutiny

FILE- Britain's Prince William, the Duke of Cambridge walks, with an East Anglian Air Ambulance (EAAA) in the background, as he begins his new role, at Cambridge Airport, Cambridge, in England, Monday July 13, 2015. The world watched as Prince William grew from a towheaded schoolboy to a dashing air-sea rescue pilot to a father of three. But as he turns 40 on Tuesday, June 21, 2022, William is making the biggest change yet: assuming an increasingly central role in the royal family as he prepares for his eventual accession to the throne. (Stefan Rousseau, Pool via AP, File)