Crews on aircraft carrier USS Constellation move bombs to A-7 Corsair II attack aircraft of Attack Squadron 146 slated to strike targets in North Vietnam on May 8, 1972. The Pentagon had authorized the attacks on April 1, following the North Vietnamese Army’s invasion of South Vietnam on March 30, the start of what became known as the Easter Offensive. (Bettman/Getty Images)

Bettman/Getty Images