John Glenn was not popular with the other astronauts. Glenn was the backup pilot for Shepard and Grissom on the first two manned Project Mercury flights, the sub-orbital missions Mercury-Redstone 3 and Mercury-Redstone 4. Glenn was selected for Mercury-Atlas 6, NASA's first manned orbital flight, with Carpenter as his backup. Putting a man in orbit would achieve one of Project Mercury's most important goals. Shepard and Grissom had named their spacecraft "Freedom 7" and "Liberty Bell 7". The numeral 7 had originally been the production number of Shepard's spacecraft, but had come to represent the Mercury 7. Glenn named his spacecraft, number
John Glenn 1959, he was assigned to the Fighter Design Branch of the Navy Bureau of Aeronautics in Washington, D.C., and attended the University of Maryland. On July 16, 1957, he made the first supersonic transcontinental flight. At that time, the transcontinental speed record, held by an Air Force Republic F-84 Thunderjet, was 3 hours 45 minutes and Glenn calculated that an F8U Crusader could do it faster. Because its air speed was faster than that of a .45 caliber bullet, Glenn called his project "Project Bullet". He flew an F8U Crusader from Los Alamitos, California to Floyd Bennett Field in New