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 School of Public Affairs. He held an adjunct professorship at the school. In February 2015, it was announced that it would become the John Glenn College of Public Affairs in April. The Glenn Research Center at Lewis Field in Cleveland is named after him, and the Senator John Glenn Highway runs along a stretch of I-480 in Ohio across from the Glenn Research Center. Colonel Glenn Highway (which passes Wright-Patterson Air Force Base and Wright State University near Dayton, Ohio), John Glenn High School in his hometown of New Concord, and the former Col. John Glenn Elementary in Seven Hills,