Don Lind, a veteran of the Apollo, Skylab and space shuttle eras at NASA, dies at the age of 92. Born in Midvale, Utah, his service as a U.S. Navy pilot and a degree in nuclear physics brought him to the attention of NASA, and he was a member of the agency’s fifth astronaut class, many of whom went to the moon. Lind was considered for the crew of Apollo 20 until that mission’s cancellation. During the Skylab space station’s tenure, he was assigned to the crew of the Skylab Rescue contingency mission (which ultimately was deemed unnecessary) and then as a potential member of a fourth Skylab crew, whose mission was also cancelled. By the time Lind made his only spaceflight, aboard the shuttle Challenger in 1985, he had been waiting nearly two decades for a flight. He retired from NASA following his flight, and went on to teach at Utah State University.