Which US military branch did Gus Grissom serve in?
United States Air Force
United States Army
United States Navy
United States Marine Corps
Answer
Gus Grissom was a United States Air Force test pilot, engineer and astronaut who was one of the original seven astronauts selected by NASA in 1959. He was the second American to go into space, and the first American to make two spaceflights. Grissom was killed in the Apollo 1 fire in 1967.
Blast off with Gus Grissom: Journey through the Life of an American Astronaut