David Carl Hilmers is a former NASA astronaut. Hilmers was selected a NASA astronaut in July 1980, and completed the initial training period in August 1981. A veteran of four space flights, he has logged over 493 hours in space.
STS-51-J was the twenty-first space shuttle mission and the maiden flight of the Space Shuttle Atlantis. It was the second mission dedicated to deploying a Department of Defence payload. It was a classified mission however we do know that it deployed two 10 satellites.Low Earth Orbit
STS-26 was the twenty-sixth space shuttle mission and the seventh flight of the orbiter Discovery. It was the return to flight mission after the Space Shuttle Challenger disaster. It was the first to have all of its crew members wear pressure suits for launch and landing since STS-4 and the first mission with bailout capability since STS-4. It was also the first all-veteran crew mission since Apollo-11 with all of its crew having flown at least on prior mission.Low Earth Orbit
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.