my brother and i and a few of his friends were in the back yard of our property. As we were watching our kids on their trampoline we noticed low pitched sound from the other side of our property. as we all looked up into the night sky we noticed a object moving slowly it seemed to of stoped and moved forward , repeating this sequence over and over. It seemed to of been two to threes stories high and maybe ahundred yards long. It had two rocket type engines coming out the side of the object. so when my brother went in to get a camera it quickly speed of .