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Related Clues:
- No aliens could get near them
- "The X-Files" subjects
- "Resident" or "non-resident" visitors
- "Arrival" visitors
- American lines out with foreigners
- Men from 6-Across
- Creatures like E.T
- Opposite of aliens
- Humans, sci-fi style
- Outsiders in Sale are characters to be shifted
- "War of the Worlds" invaders
- Contents of a saucer, maybe
- Extra-terrestrial beings
- Some sci-fi heroes
- 'Little green men'?