David M. WalkerStatus: Deceased 5/20/1944 – 4/23/2001 Nationality: American Type: Government First Flight: 11/8/1984 Last Flight: 9/7/1995David Mathieson “Dave” Walker was an American naval officer and aviator, fighter pilot, test pilot, and a former NASA astronaut. He flew aboard four Space Shuttle missions in the 1980s and 1990s.LaunchesSpace Shuttle Discovery / OV-103 | STS-51-ASpace Shuttle Atlantis / OV-104 | STS-30Space Shuttle Discovery / OV-103 | STS-53Space Shuttle Endeavour / OV-105 | STS-69National Aeronautics and Space AdministrationType: Government Abbreviation: NASA Administration: Administrator: Bill Nelson Founded: 1958 Launchers: Space Shuttle | SLS Spacecraft: Orion Country: USAThe 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.