John Glenn was an Officer of United States Marines with the rank of
Major before chosen to become part of the Mercury 7 program.
He was awarded five Distinguished Flying Crosses. Made record setting
Coast to Coast flights in the late 1950s.
He named his spacecraft (capsule) Friendship 7 and it is on display at
the Smithsonian Institute Air and Space museum, directly underneath
Chuck Yeager's "Glamerous Glennis" Bell X-1.