Las Vegas UFO Video : April 16, 2014

I took this video at about 8:20 PM to 8:24 PM on April 16th, 2014 from my backyard. I was looking to the northeast or towards North Las Vegas and Nellis Air Force Base.

At about 8:20 PM on April 16th, 2014 I went out onto my patio to have a cigarette. At about 8:22 PM I saw what I thought was a low flying airplane over Las Vegas until it reversed directions instantly. I got up and went to a spot in my yard where I could see it better. It was moving all over the northwestern sky, blinking a greenish blue and red. The colors were very bright. I immediately reached into my pocket and grabbed my Galaxy S4 so that I could try and shoot a video of what I was seeing. It's only the second time I have filmed a video on this phone so it was a bit shaky and I was pretty jacked up because you could clearly see this was a UFO and not a conventional aircraft. This all appeared to occur over and near Nellis Air Force Base however another witness said it was in the Centennial Hills area of Las Vegas so it was probably between 13 and 21 miles away when I videotaped it. My home is on the extreme west side of Las Vegas near the Red Rocks and the Pine Mountains. The video is shaky but other parts clearly show this object moving at incredibly fast speeds and in a manner no other air worth craft could do. Nellis Air Force Base is 21 miles from my home so if it was over the base it must have been pretty large in size and it must have been moving very fast at times. It also seemed to go very low at times, seeming to almost land right in the populated area of North Las Vegas.