In 1965, the United States launched Gemini 7 with Air Force Lt. Col. Frank Borman and Navy Cmdr. James A. Lovell aboard on a two-week mission. (While Gemini 7 was in orbit, its sister ship, Gemini 6A, was launched on Dec. 15 on a one-day mission; the two spacecraft were able to rendezvous within a foot of each other.)