Related Clues:

• Cancellation
• Be off the mark
• 'Little ___ Sunshine'
• Not catch
• Cancelled
• Feel nostalgic about
• Scuttled mission
• Something off-limits
• Not understand
• Inoperative, at 14-Across
• 'Mission aborted'
• Nixed, at NASA
• Forbidden-zone description
• Musical set in Vietnam
• Long to see