Columbia native Charles Bolden has had a remarkable career: Marine fighter pilot, commanding general in Operation Desert Thunder in Kuwait, deputy commandant of midshipmen at the U.S. Naval Academy. Those distinctions are impressive enough, but he is best known for his work for NASA, as both astronaut and head of the entire agency. Recently retired as administrator of NASA, he recalled his most famous flight, as pilot of the space shuttle Discovery, which in 1990 deployed the Hubble Space