Related Clues:
- Some sightings
- Craft for 73 Across
- Alien ships
- Astounding Stories subjects
- Initially, official flying saucers
- Initially and formally, flying saucers
- Initially, formal flying saucers
- E.T. carriers, theoretically
- Wormhole ships
- Fleet from outer space?
- Sci-fi subjects
- Area 51 holdings, supposedly
- Tabloid craft
- Area 51 phenomena
- Aerial anomalies