Geoffrey Bowman is a retired litigation lawyer living with his wife in Belfast, Northern Ireland. A sometime glider pilot, he is a fellow of the British Interplanetary Society and has contributed to the society's Spaceflight magazine. He is a regular contributor on spaceflight to the quarterly magazine of the Irish Astronomical Association, of which he is a member. Jack Lousma is a retired U.S. Marine Corps colonel, former naval aviator, NASA astronaut, and politician. He was a member of the second crew on the Skylab space station in 1973 and commanded the third space shuttle flight in 1982.