6 objects in formation flying North at very high rate of speed, visible with night vision onlyWhile outside using night vision goggles, I observed 6 faint dots (faint with NVG's, would've been impossible to see with the naked eye) flying North at what had to be an incredibly high speed. I had already seen a few satellites, and they were traveling at least twice the speed of the satellites, if not faster. They were in somewhat of an "M" formation, but not precise or constant enough to be one object. They were able to cross my entire field of view in approximately 5 seconds..