Construction worker performing maintenance.
Construction workers working.
Construction workers eat sandwiches on top of a high beam.
Cultures changed during the Age of Enlightenment.
Two girls are ice skating.
The man is watching a tv show.
A man stands and gives direction.
Two men in a small boat are working on a larger ship.
What Really Happened at Roswell, Abduction by Aliens, and Sleep Paralysis provide a more skeptical view of these issues.