The lights seemed to be pulses of bright white lights, like nothing I've ever seen.I was showing my grandchildren some constellations when we noticed what seemed to be fire works, it looked like sparklers. As it rose up from the horizon they moved in formation from north to south east. It was visible for 5 to 10 minutes. The lights seemed to be pulses of energy. I'm am Viet Nam veteran, I've seen a lot of military craft but nothing like that.