Related Clues:

• Org. with missions
• Astronaut's insignia
• Endeavour acronym
• Atlantis letters
• Schirra's group
• Space explorer
• Shuttle org.
• Org. with a mission
• Canaveral letters
• Launch agcy.
• Big rocket launcher
• Pad owner
• Rocket launcher
• Carpenter's employer, once
• Its vehicles aren't UFOs