This event happened on the Navajo Reservation. The object flew close to the ground. It changed colors (blue, green, and yellow)while it glided by the school. Three lights flashed quickly. As it headed away from us, the shaped became vivid to a glowing cylinder. There was no noise, just a quiet glide. As it headed farther out, the object quickly shrunk to a small bright dot. It disappeared over the horizon. The object seem to be traveling from the south direction and disappeared into the northeast direction between Wide Ruins School and Window Rock, Arizona.