Seen an object very high in the sky, moving at a high rate of speed to the south and jumping side to side while continuing to move forward lateral. Had three flashing bluish/white lights that flashed in a counter-clockwise triangle.

I, who was 13 at the time, and a friend who was 14 were camping out under the stars in my back yard. It was a mostly clear night with a full moon and some scattered high cirrus clouds. My friend saw the object first and immediately pointed it out to me. It was three strobe-like lights flashing in a counter-clockwise triangle. It was moving very fast across the sky from north to south. It passed over the scattered cirrus clouds, so I estimate it must have been above 50,000 feet in altitude. It would move irratically from side to side and diagonal while maintaining it's forward (southerly) course. It was as if it was actually jumping like a water bug. Since it was at least 50,000 feet in altitude, I estimate when it jumped it was jumping at least a couple of miles at a time. We observed the object until it cleared our horizon (until we could no longer see it). It was moving too fast for me to even run and get my telescope out of the house. It cleared our horizon in about 45 seconds time. A passenger jet at altitude takes nearly five minutes to clear our horizon. Taking that into consideration, this thing must have been moving at thousands of miles per hour. It didn't leave a contrail of any kind and it made no sound. I never actually seen the body of the object; all I could see was the lights, so I'm assuming it was shaped like a triangle because of the pattern of the lights. The lights were not very bright -- they were like a strobe in the sense that they flashed similarly to a strobe but they were much softer then strobes. They were bright enough to see through the cirrus clouds when passing above them. I called the local Air National Guard and they refered me to a UFO reporting line, which I called and reported to. They seemed quite interested in my observation. I have never seen this object or anything similar since. It was a very exciting night for a couple of young teenagers. As for backgrounds, we were just normal kids. I am thankful that we were able to see such an awesome sight. I will never forge! t it.