Wing shaped UFO spotted above the Banks city area.It was hovering about 2 miles away at a pretty high altitude. I thought it was a B-2, or one of those old Flying Wings, but it was hovering in a still.It looked alot like a B-2, it was blackish dark grey. It hovered for about 1 minute, then it sharply shot forward and then slowed down to a stop. It then hovered for about another minute and then it shot up at an angle into the sky and dissapeared.I saw a ufo when I was 10 years old, but I havent been looking for them since. I have a major knowledge of aviation so, I can tell the differences between aircraft made in this world, and I know that wasnt something I've ever heard of or seen before. I dont know if it was making any noise due to a Cessna flying circles over head.I called the Hillsboro Airport (our local airfield) and they said that they were not tracking anything in that direction, but they said that it was probabally a military jet from the Portland Airbase. Yeah right, the base only has F-15s as their jets, and they wouldnt be flying a jet that could do what this did around here... This was a UFO.