Walter Marty Schirra, Jr. (March 12, 1923 – May 3, 2007) was one of the original Mercury 7 astronauts chosen for the Project Mercury, America's first effort to put men in space. He was the only man to fly in all of America's first three space programs (Mercury, Gemini and Apollo). He logged a total of 295 hours and 15 minutes in space.
On April 2, 1959, Schirra was chosen as one of the original seven American astronauts. He entered Project Mercury and was assigned the specialty area involving life support systems. On October 3, 1962, Schirra became the fifth American in space, piloting the Mercury 8 (Sigma 7) on a six-orbit mission lasting 9 hours, 13 minutes, and 11 seconds.
During the Apollo 7 mission, Schirra caught what was perhaps the most famous cold in NASA history. He took Actifed to relieve his symptoms upon the advice of the flight surgeon.