I took the dog out at approximately 11:00 pm on the 29th and noticed a plane-shaped object flying low overhead. it looked similar to a dc-10. it had a white flashing light in the center and a red light on both wings. it was flying very low - i'd guess about 1,200 feet or less at about the altitude that helicopters fly in this area. the body of the craft was a dark color and i could not see details. there was no sound whatsoever. at that altitude there should have been the sound of engines. then a second craft came along at the same exact altitude and trajectory, then a third, and so on until i lost count of them. they all went from se (the direction of whiteman afb) to nw right over kansas city. either whiteman has silent planes now or these were ufos.