The Apollo 8 prime crew stands in foreground as the Apollo Spacecraft 103/Saturn 503 space vehicle leaves the Kennedy Space Center's Vehicle Assembly Building on way to Pad A, Launch Complex 39. The Saturn V stack and its mobile launch tower are atop a huge crawler-transporter. The Apollo 8 crew consists of left to right astronauts Frank Borman, commander; James A. Lovell Jr., command module pilot; and William A. Anders, lunar module pilot.