David Leestma Status: Retired 5/6/1949 – Nationality: American Type: Government First Flight: 10/5/1984 Last Flight: 3/24/1992 David Cornell Leestma is a former American astronaut and retired Captain in the United States Navy. National Aeronautics and Space Administration – USA The National Aeronautics and Space Administration is an independent agency of the executive branch of the United States federal government responsible for the civilian space program, as well as aeronautics and aerospace research. NASA have many launch facilities but most are inactive. The most commonly used pad will be LC-39B at Kennedy Space Center in Florida.