I am making this full report at the request of a MUFON Investigator, due to the recent discovery that a loss of the one from 2003 has occurred Reference CMS 2426.This is the official report Filed with the Sheridan County Sheriff's Dept. ON 7/11/03 and faxed to MUFON HQUnidentified Flying Object ReportOn 7/10/03 at approximately 2300 hours, my wife [cms/tg/pid] went outside on our back deck to have a cigarette. While she was looking up into the south eastern sky, she noticed a small formation of three or four stars. One of the stars shot straight down and stopped.A series of lights came on and the object started moving in a northwest direction. She yelled for me to get out there and when I got outside I saw what I first believed to be an aircraft except the red and white and green lights were in a vertical formation, not horizontal. I now noticed that the speed of this object was relatively slow. I listened and heard a muffled sound much like a jet aircraft makes. The object got closer and I estimated it to be about 1000 feet in the air. It was just light enough to make out a silhouette. The object was longer from top to bottom than it was from front to back. It had depth to it and if I were to associate a shape to it I would say diamond shaped. The craft had two small red lights on the front and two small red lights on the rear about in the center of it. When it got closer I noticed several larger windows that projected light from inside the craft. There were three larger red and green lights running vertical along the front edge of the craft. I was trying to pay attention to as many details as i could and the one thing that stands out in my mind is that the speed was too slow and the muffled jet engine sound did not match and the sound was farther behind the craft. I also estimate that this craft is about 100 feet long and approximately 200 feet high. It was moving too slow for it's size. The sky was lighter in the west and I was hoping that when it got in a position that the sky was lighter I would be able to tell what it was. As the craft got to this position, I noticed the diamond shape of this craft and that it was not flat but did have some depth to it. We had been watching it for approximately 30 sec. I knew that it was right over my deputy's house so I ran inside and called him. I told him to go outside and look up because there was some sort of UFO over his house. My wife had run out to the front porch and I went outside and she told me that about the same time I said UFO that the craft stopped, the red lights went out, the jet engine sound stopped there was a soft white glow around the back of the craft, and the craft shot straight up and disappeared. The craft was approximately 6 to 10 miles away at this point. My deputy called back to tell me he saw nothing.I have spent 14 years in the U.S. Air Force, all of them around jet aircraft. I cannot explain what we witnessed using any logical means. Our Law Enforcement dispatch center is handled on a statewide basis. I called State Radio and Identified myself by my unit # 4610 and inquired if they had received any reports of strange aircraft or UFO reports. I was told no. They informed me that if they did they would notify me.[cms/tg/pid]* Note: approximately on week after this event took place, 2 F-15's followed the same flight path as the ship we witnessed. This may have just been a coincidence.However we don't have F-15's flying overhead around McClusky.Approximately two years after the sighting I was walking down an alley in Bismarck ND and an air exchange unit came on up on a roof of a building. I immediately recognized the sound as the same sound that I had heard during the sighting back in 2003. This would explain the sound that I could not match with the thrust necessary to keep that ship in the air. Thank you,[cms/tg/pid]