Noticed 6 yellow / orange lights over Denver toward Lakewood area around 6 PM (just after dark) while driving home from work. I had just turned, facing west onto Hampden Avenue from Gun Club Road in my car, when I noticed 6 yellow / orange glowing lights as my car was crossing the Hampden / E470 bridge. Lights were at a distance across the metro area, in the direction of Lakewood. Their movement and appearance stuck me as highly unusual upon first sight.

The 6 lights were approximately 1000 feet over the metro area, moving around each other rapidly. One of the 6 lights broke away from the others, descending rapidly toward the ground. The remaining lights moved upward slightly in the opposite direction and dimmed & faded out over about 5 seconds.

I pulled my car off of Hampden Avenue to see if the lights would return, however they did not come back into view. I waited a few minutes, but did not see them again. The entire sighting from the point I noticed the lights until they disappeared was approximately 30 seconds.

I thought it might have been a fireworks display at Invesco Field, however the lights movement and color did not resemble any type of explosion or fireworks that I had seen before. There were also a number of aircraft over the metro area at the time of the sighting, however the lights did not appear to have any strobes like airplanes or helicopters. Their movement was too rapid and unsual to be regular aircraft.

I work in the aviation industry at DIA, and live near Buckley AFB. I am very used to seeing all types of rotor and fixed wing aircraft of military, commercial and civil variety. The lights over Lakewood did not resemble anything I had seen prior to this evening.

Source: MUFON
Edited for clarification