David Randolph Scott (born June 6, 1932) (Col, USAF, Ret.) is an American engineer, former NASA astronaut, retired U.S. Air Force officer and former test pilot. He belonged to the third group of NASA astronauts, selected in October 1963. As an astronaut, Scott became the seventh person to walk on the Moon. Following the death of John Young in January 2018, Scott became the last living commander of a successful Apollo lunar landing mission and, as such, the only person currently alive who has flown a spacecraft to a landing on the Moon. Before becoming an astronaut, Scott graduated from the United States Military Academy at West Point and joined the United States Air Force. He graduated from the Air Force Experimental Test Pilot School (Class of 1963) and Aerospace Research Pilot School (Class of 1964). Scott retired from the Air Force in 1975 with the rank of colonel, and more than 5,600 hours of logged flying time. As an astronaut, Scott made his first flight into space as pilot of the Gemini 8 mission, along with Neil Armstrong, in March 1966, spending just under eleven hours in low Earth orbit. Scott then spent ten days in orbit as Command Module Pilot aboard Apollo 9, his second spaceflight, along with Commander James McDivitt and Lunar Module Pilot Rusty Schweickart. During this mission, Scott became the last American to fly solo in Earth orbit (not counting subsequent untethered EVAs). Scott made his third and final flight into space as commander of the Apollo 15 mission, the fourth human lunar landing, becoming the seventh person to walk on the Moon and the first person to drive on the Moon.