Gus Grissom, American colonel, pilot, and astronaut (died 1967)

Virgil Ivan "Gus" Grissom was an American engineer and pilot in the United States Air Force, as well as one of the original Mercury Seven selected by the National Aeronautics and Space Administration for Project Mercury, a program to train and launch astronauts into outer space. Grissom went on to be a Project Gemini and Apollo program astronaut for NASA. As a member of the NASA Astronaut Corps, Grissom was the second American to fly in space in 1961. He was also the second American to fly in space twice, preceded only by Joe Walker with his sub-orbital X-15 flights.

April 3 is the 93rd day of the year in the Gregorian calendar; 272 days remain until the end of the year.