Bell OH-58A 68-16830 was upgraded to an OH-58C. With a more powerful engine, the early OH-58Cs also had flat windscreen panels. It was to reduce reflections on the battlefield that may give away it's position, the flat panels were found it restricted forward vision compared to the standard curved windscreen. This aircraft is on the US civil aviation registry as N76KP to Northwest Helicopters but is displayed unmarked.