Team effort keeps base water supply safe
BALAD AIR BASE, Iraq -- -- Staff Sgt. Gary Messer, 332nd Expeditionary Aerospace Medical Squadron bioenvironmental engineer, transfers a sample of tap water to a tube before performing tests to confirm that the water is free from bacteria here, March 13. Sergeant Messer is deployed from Lackland Air Force Base, Texas. (U.S. Air Force photo/ Senior Airman Julianne Showalter)