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
Gemini spacecraft No. 2 and Glenn Martin Space Gallery at the National Museum of the USAF in 2016. The capsule was put on display in the exhibit hall of the Air Force Space and Missile Museum of the USAF in 2017. Gemini spacecraft No. 2 Gemini spacecraft No. 2 (officially known as "Gemini SC-2", for "space capsule 2") was the second NASA Project Gemini full-up space capsule built. This McDonnell Gemini capsule was the first ever spacecraft to be reused, flying twice into suborbital space. No.2 flew on missions Gemini-Titan 2 and Manned Orbiting Laboratory Gemini-B flight. The capsule is currently on display at