UFO's flying over Denver - everyone's stumped

Straight out of the X Files comes this clip from Denver's Fox 31. Last week, a viewer sent the station a video of something ... something spooky. A flying object was buzzing in the sky, and it looked like maybe it was carrying little green men.

Was it really a UFO? Suspecting the clip was a prank, the TV station sent out its own photojournalist to see if he could document the same weirdness on his own. Guess what? He did.