A Colorado witness watched a silent object passing overhead at 500 feet with an unusual shape on May 17, 2010, according to testimony from the Mutual UFO Network (MUFON) witness reporting database.

"As it was passing over Broadway in front of me I realized there were no windows on it," the witness stated. "The wings on it were not shaped like conventional ones; they seemed to come out to a point and the tail section looked way too small for the 'plane'. The fuselage was long and thin. I also noticed no exhaust."

The object may have been 100 to 150 feet long.

The witness wonders if the object could be a drone coming from a local Air Force Academy. No town name was given in the public portion of the MUFON report.

Colorado, May 17, 2010 - The "plane" had no windows. MUFON Case # 23344.

I was driving south on Broadway heading to work (between Arapahoe and Mineral) I work 3rd shift. I first noticed it coming over the tree line from the SW heading NE towards Denver International Airport (DIA).

But it could not have been more than 500' up

Too low for DIA,and heading the wrong way for Centenial.

As it was approaching I turned down my radio and rolled the window down all the way. heard nothing (there was traffic noise though). As it was passing over Broadway in front of me I realized there were no windows on it.

The wings on it were not shaped like conventional ones they seemed to come out to a point and the tail section looked way to small for the "plane". The fuselage was long and thin. I also noticed no exhaust.

The feeling I had was I have seen this before then it hit me, the Utah aircraft mystery. Not exactly like it but very similar. My best guess was it was a 100 to 150 feet long I lost sight over the tree line to my left and behind me. Upon reflection it could have been coming from the Air Force Acadamy. A drone?