Related Clues:

• "I wouldn't worry about it"
• "It's a ___" ("It's been canceled")
• Irrespective of
• Mission-scrapping words
• Failed NASA launch
• 'That's of little importance'
• NASA nix
• Canceled, NASA-style
• Astronaut's negative
• Unready, in NASA-speak
• 'Forget I said anything'
• Scrubbed, as a launch
• Impossible task for goon
• Can't be done, not on
• Area forbidden to certain groups, maybe police