Related Clues:

• End early
• Terminate
• Expel
• Terminate, at Cape Canaveral
• End abruptly
• Cancel the mission
• Scrub the mission
• Mission-stopping command
• Cancel a mission
• Nip in the bud
• Scrub, NASA-style
• Call off, in a way
• Cancel, as a rocket launch
• Call off, as a launch
• Scrub, as a mission