Seen 3 pure white Boomerang shaped crafts "flying" extremely high in the afternoon , blue sky.

I was in my backyard between 1:00pm - 1:30 pm and happened to look up and couldn't believe what I was seeing. I seen 3 pure white, Boomerang shaped, "U.F.O.'s" very , very high in the sky. They were moving ( something strange about the way they were " flying " ) in a southerly direction. They were moving with the outside tips of the " boomerang" in the lead, not the center tip in the lead. The center tip was trailing. Very strange. They were somewhat close together. The two on the outside were distanced , the one in the center area was Lower and trailing behind. Then all of a sudden the center one "sped" off substantially faster. Within another 3 or 4 seconds they were still heading in the southerly direction and then out of sight .
I heard no sound , there were no lights or appearance of lights that I could determine. Only seen a pure white appearance.