Outside.Watch the sky every nite for about 2-3 hours.Activity is mainly between 7-8 pm.My neighbor and i were both watching.She saw at the same time to my right a line of bright orange lights.I told her to look to my left but by then my object disappeared.I could not even guess as what it could be.I noticed it because it was larger than anything i had seen before and multi-colored.It just appeared,flashed its brights and disappeared.I was in awe.I wanted it to come back.Also,i know what military flares look like.It was not flares.I am quite used to seeing the a-10s practicing and they (always) travel in pairs.Never alone.I also know the sound of their engines.