Object seen to apparently explode-minutes later 2 large military helicopters in areaWhile sitting in my living room watching TV, I looked out our sliding glass doors that lead into the backyard. The yard faces to the West of Tucson. Directly on the other side of the backyard wall is a Dry Wash (desert area) As I looked I observed an object with two red lights, one in the rear and one in the front. I could not tell what shape the object was. Suddenly the object appeared to “explode” It was a bright white flash that was so bright there were other colors produced by this apparent “explosion”, green, red, etc. There was no sound.The object had disappeared. This sighting was approximately 2 to 3 seconds. It was very fast, but long enough to see what I saw.Approx. 10 minutes later, myself, husband, and daughter observed 2 very large Military helicopters flying in from the Northwest, flying Southeast. Since there are numerous bases in the area, including Davis Monthan to our South, the sightings of helicopters isn’t unusual. The helos were flying slow and very, very low, in fact I don’t recall ever seeing helicopters this low before and neither has my husband. Also, the flight corridor that they were utilizing is one I have never seen them use before. They flew directly over the area that I observed the object in, which was approx. 200 feet west of my back fence. May have been a coincidence, but then again it may not have.