Me, my wife, and another couple, as well as our small children were waiting for a fireworks display on the 4th of July. The night sky was exceptionally clear, and I was gazing up at the stars. I noticed something moving in the sky, if it had not been moving it would have looked like another star. It was a white dot of light at a very high altitude moving very fast, but not like a shooting star. It was moving from southeast to northwest and stayed visible until it was gone beyond a treeline on the horizon. It never changed course. I've seen planes fly that high before, and they always look like they are in slow motion being so far away, but this was moving much faster. It had only the one star sized white light and no other lights that might indicate a plane or helicopter. There was no sound either. Our friend from the couple we were with is a veteran of the Navy, and he even stated that it wasn't possible to be any known aircraft, and also confirmed that at the elevation it appeared at, it should look as if it were moving much much slower than the object we saw. He said it was a "UFO" but added that that didn't mean "aliens" (which I acknowledge as well). There is an airport nearby, but from the southeast of us, not from the direction the object came, or was heading. We did see planes in the sky from the airport, they were much slower, and the light configurations were easily identified.((NUFORC Note: Witness elects to remain totally anonymous; provides no contact information. PD))