Robert Lee Stewart is a retired brigadier general of the United States Army and a former NASA astronaut.
STS-41-B was the tenth Space Shuttle mission and the fourth of the Space Shuttle Challenger. It deployed 2 communication satellites and inluded the first untethered spacewalk. It was also the first shuttle mission to land at Kennedy Space Center.Low Earth Orbit
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
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.