ALASKA UFO VIDEO TAPED AND WITNESSED IN 2003.As a police officer working for the City and Borough of ((temporarily deleted during investigation)), Alaska in 2003, I was dispatched with the Chief of Police to respond to a report of a low flying object over one of the residential neighborhoods. The day was sunny, cool (about 60 degrees), and not a cloud in the bright blue sky. When we arrived on scene, a local resident pointed to the sky approx 30 degrees up off the horizon, approx 5 miles away (estimations), there was a silver ball slowly moving across the skyline. As we observed the object, the resident shouted "No s(*%, a real UFO". We video taped the object for approx 15 to 20 minutes before disappearing over the horizon. The most surprising observations were the inexplicable ability of this object to change shapes from circular to diamond, and back again. It appeared to vibrate and blur its borders while conducting these shape changes. The absolute strangest observation was my attempt to zoom in on the object where I observed symetrical smaller diamond shaped patterns in "the hull" (for lack of a better term) but the object immediately speed out of view in a looped, non-linear manner when I apparently was getting too much detail on the cam-corder. Most unusual. I still have the video tape. This object is not anything conventional or seen before; not an airplane, no propeller, no "nose" or "bill" or "tail". We did not shoot the object because we thought this was potentially some secret project with humans aboard. The incident is documented and witnesses are available. I have never been visited since; even though I wish I would be.((NUFORC Note: We have requested additional reports from the Chief of Police, and from the other witnesses, as well. Also, we have requested a copy of any police report that may have been generated by the incident, as well as permission to view, and possibly post, the video tape that apparently was made. Date of incident is approximate. PD))