Flying Object hovered over the woods across the football field , made some manuveurs and then took off and dissapeared.

At approximately 2:30am I and two friends ( we were all about 14 or 15 yrs. old ) were sitting on a bench at the football field at Stony Brook University .Suddenly my friend noticed the " flying turtle "( as we came to call it) in the sky rising up from what we later found out to be a clearing behind the woods across from us . ( the distance from us was width wise across the football field ) The ufo hovered for a few moments  or a few minutes and then descended back down , hidden from the woods . Then it rose back up again , hovered again and then moved slowly to the left a little bit and back to the middle . Then it hovered again and  moved slowly to the right and back to the middle where it hovered again until it moved up a little bit and back to the middle where it hovered again and then moved back up slowly and higher up until it took off slowly to the left and then WHOOSH it just dissapeared .The object was silient and had lights around the outside rim and one on the middle of the bottom .I recall they were all white lights .It was very close to us we could see that this was not anything known to us . We did not report this because we were breaking curfew . We were not drinking or  anything like that . Now 18 yrs. later I still think about this awesome experience . I know what I saw .