A large white object with sparks coming off it lit up the night sky before breaking into pieces.A group of us were standing outside waiting for a friend at 3:15 am when the entire sky lit up. There was 2 flashes that made it look like it was day light. We then observed a bright white light about the size of a quarter. The object looked like it had sparks coming off of it. The object then broke into large pieces before disappearing behind the mountain. About 2 minutes later we heard a large boom, boom, boom, that echoed in the valley. The booms sounded very very far away. The object was silent when we observed it.((NUFORC Note: Witness indicates that the date of the incident is approximate. PD))