BALAD AIR BASE, Iraq -- Airman Nicholas Wengerd, 332nd Expeditionary Civil Engineer Squadron electrician, changes out an approach light here, Feb. 28. The approach lights help to illuminate the runway during night time landing operations. Airman Wengerd is deployed from Ellsworth Air Force Base, S.D. (U.S. Air Force photo/ Senior Airman Julianne Showalter)