Senior Airman Eric Lobina (left) and Senior Airman Keith Winn, 19th Aircraft Maintenance Squadron aerospace propulsion journeymen, discuss a propeller assembly operational test with Lt. Gen. Darren McDew, 18th Air Force commander, during his visit to Little Rock Air Force Base, Ark., Nov. 6, 2012. The test ensures that there are no leaks, and the propeller blades are set to the proper angle. (U.S. Air Force photo/Staff Sgt. Russ Scalf)