I have been employed with the US Army and have never saw anything like this before.I steped out of my doctors office and happened to glance up at the northern sky when I saw a oval or, blimp looking craft. It favored a blimp but I have never saw a blimp with a flat bottom and it was very high in the sky and flying very fast. Too fast to be a blimp. It was in the eastern part of the notthern sky when I first saw it and only took about 45 seconds to a minute for it to get in the western sky then turn north and in a few seconds it was out of sight. I ran inside the doctors office and ask a lady to come out to see this thing before it dissapeared so I would not be the only one to see it. She said it couldn't be a jet because it had no vapor trail but was flying even faster than any jet I have ever seen. It was silver, almost white on color. One could tell it was a matalic objeck. Also there was no sound comming from this object.This is what I saw. I believe it to be a UFO because I am 59 years old, employed, and retired, from a army depot.