Related Clues:
- Mysterious radar blip
- Space alien's ship
- Tabloid craft, briefly
- Unusual sighting, for short
- Vehicle without local plates?
- ET, perhaps
- "__ Hunters": History Channel show with the tagline "Hoax or History?"
- Sci-fi sight
- One not filing a flight plan
- Craft in some rumored cover-ups
- ET craft
- ET conveyance, maybe
- Vehicle for 4-Across
- Mysterious saucer
- You can find one in the four longest puzzle answers, even if you don't believe