It's a Mile High mystery, strange objects flying over Denver have aviation experts and others baffled.
These strange sightings were first pointed out by a man who submitted a home video.
That man does not want to be identified.
He captured the images on his digital camera from a hilltop in Federal Heights, looking south toward downtown Denver.
He says the flying objects appear around noon or 1 p.m. at least a couple times per week.
"You're going to see it come in from the top and do a loopy loop," the man explains.
The strangest part is they are flying too fast to see with the naked eye, but when the video is slowed down frame by frame, it's there. The color and contrast have been altered in the video above to help you see it.
To make sure they hadn't been given a phony video, a news crew went out and shot footage of their own. Watch their report in the player above to see what they captured.
Do you believe?