Airmen test out teh Engagement Skills Trainer 2000 Jan. 4, 2010, at Eielson Air Force Base, Alaska. The EST 2000 prvoides Airmne several scenarios in which they woudl be required to fire their weapon. (U.S. Air Force photo/Staff Sgt. ... Each sytsem consists of an instructor/opeartor station, a highresolution projector, a detection system, an air comprsesor, a screen, cabling, and hoses to connect to lane position weapon boxes and the associated smallarsm weapons. ...