A very bright light was idle in the sky, 2 seconds later it shot downwards at lightning speed.

We were at a red light and a very bright light was idle in the North sky. It was too bright to see the size. 2 seconds later it shot downwards at lightning speed and was gone. We later met up with our friends and described the event, which they saw too, in the North sky. They also said that they saw a tennis sized cloudy bubble floating in the intersection. It didn't seem to be affected by the wind, and was hovering in the intersection. They described it as cloudy or milky. All of these sightings occured between 8:05 and 8:10 PM last night in Fort Collins Colorado.