David Randolph Scott is a retired test pilot and NASA astronaut who was the seventh person to walk on the Moon. The commander of Apollo 15, Scott was selected as an astronaut as part of the third group in 1963. Scott flew three times in space, and is the only living commander of an Apollo mission that landed on the Moon and one of four surviving Moon walkers. Following the deaths of James Irwin in 1991 and Alfred Worden in 2020, Scott is now the last surviving crew member of Apollo 15.