He was the first astronaut to go into space three times, and the only astronaut to have flown in the Mercury, Gemini, and Apollo programs. In total, Schirra logged 295 hours and 15 minutes in space. After Apollo 7, he retired as a captain from the U.S. Navy as well as from NASA, subsequently becoming a consultant to CBS News in the network's coverage of following Apollo flights. Schirra joined Walter Cronkite as co-anchor for all seven of NASA's Moon landing missions.