Airman 1st Class Anthony Port, 332nd Expeditionary Maintenance Squadron aerospace ground equipment mechanic, pumps hydraulic fluid into a hydraulic systems test stand here, Jan. 28, 2008. The test stand can be hooked up to various aircraft and allows crew chiefs to test all hydraulic systems on the ground to ensure proper function during flight. Port is deployed from Spangdahlem Air Base, Germany. (U.S. Air Force Photo/ Senior Airman Julianne Showalter)