8. Astronaut John Glenn, far right, accompanies his family onto an Air Force plane in Key West, Fla., on Feb. 26, 1962, en route to a series of celebrations after his spaceflight. From left are his wife, Annie, their daughter Lyn and their son David. John and Annie were childhood playmates and high-school sweethearts while growing up in New Concord, Ohio. They were married in 1943, just after John Glenn received his commission in the Marine Corps.ss-120216-john-glenn-10n_48fd50bd923fded87507ffc79400aa23-nbcnews-ux-1024-900

Harold Valentine / AP