a craft of unknown description....I witnessed a craft that was not an airplane or a helicopter. It was a boomerang shaped object that was covered in various colored lights, and had many pinpoint lights...like what planes have on their tails.....but there were lots of them. It sparkled like a diamond in the light. It moved in erratic and figure eight patterns n the sky, like no known aircraft. It hovered in the night sky moving in erratic patterns, then would move quickly below the line of sight...almost like it was landing....then appear again in the sky. The colored lights were briliant...as were the almost sparkling pinpoint white lights. Ive seen airplanes and helicopters...and neither would be able to float in such patterns as this craft. I was delivering pizza when I became transfixed by this object in the sky. I estimate the body was between 30-50 feet in width.