Related Clues:
- Sci-fi transport
- Sequel set on the moon LV-426
- Aerial enigmas
- Some strange sightings
- 'The X-Files' fodder
- Saucer fliers
- They're encountered in 'close encounters'
- Visitors from afar
- Conspiracy subjects
- They can be resident or non-resident
- Project Blue Book subject
- Sci-fi sightings: Abbr.
- Hover crafts?
- Abductors' crafts, some say
- Unsettling sightings