Three, blue, circular lights were hovering in a triangle formation over a field in Northern, NY in June 1991.

My husband and I were driving late at night (between 11pm-midnight) on Rt.68 between Ogdensburg, NY and Canton, NY in June 1991.  I looked out the window where I was sitting on the passenger side and saw three, blue, circular lights hovering over a field.  They were off in a distance of about 1500ft., were in a triangle formation at first and then started moving in a fast, jerky motion. 
I shouted to my husband to look quick.  These lights separated and spread out still hovering above the field as we kept driving.  My husband slowed the car and we both watched these objects for another minute.  
Not sure what I was seeing I asked my husband, who was in the National Guard at the time, if the military had new flares they might be testing.  He told me absolutely not to his knowledge. 
The lights remained hovering for a few more seconds and then each round light shot up into the sky at different angles and disappeared. 
Both of us still remember this UFO sighting very vividly and we even found out later on that other people saw these lights that same night as well.
Witness indicates that the date of the incident is approximate.  PD