3/6/2013 - SPANGDAHLEM AIR BASE, Germany – Staff Sgt. Nathandeno Santos, 52nd Component Maintenance Squadron aerospace propulsion technician from Guam, records data in an engine test cell Feb. 27, 2013. After receiving maintenance, engines must pass certain tests before returning to operational aircraft. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

3/6/2013 - SPANGDAHLEM AIR BASE, Germany – Aerospace propulsion technicians perform maintenance on an F-16 Fighting Falcon engine in an engine test cell Feb. 27, 2013. The test cell inspects approximately 100 engines per year. The engine diagnostic consisted of checking temperature, air flow, fuel and leaks. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

3/6/2013 - SPANGDAHLEM AIR BASE, Germany – Staff Sgt. Jason De La Vega, 52nd Component Maintenance Squadron aerospace propulsion technician from Las Vegas, adjusts the throttle of an F-16 Fighting Falcon engine Feb. 27, 2013. The 52nd CMS tests the engine at multiple levels of thrust to ensure it is able to deliver power to aircraft. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

3/6/2013 - SPANGDAHLEM AIR BASE, Germany –Airman Jeremy Rushing, 52nd Component Maintenance Squadron aerospace propulsion technician from Charleston S.C., pumps oil into an F-16 Fighting Falcon engine Feb. 27, 2013. This is part of a post engine reconstruction inspection. After a full engine reconstruction, all liquids are drained and then replaced for testing. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)