I, along with three friends, were barbecuing at our local park when we noticed an unusual object in the sky. It was a thin saucer shape, with a flat bottom and a gently domed top, and it was glowing whitish-blue from the bottom. As we watched, the object began to move slowly across the sky in a zigzag pattern, as if it was trying to evade something. The glow from the bottom of the craft intensified as it moved, casting an eerie blue light on the surrounding trees and grass. As it moved farther away, the blue glow began to fade, and the saucer appeared to blend into the night sky. Overall, the sighting lasted approximately 5 minutes.