OPERATION IRAQI FREEDOM -- Master Sgt. Mindy Patrick and Maj. Darrin Ott, members of the 86th Expeditionary Contingency Response Group's Environmental Medicine Flight, take water samples for testing from a reverse osmosis treatment operation at a Northern Iraq airfield, April 1, 2003. (U.S. Air Force photo by Tech. Sgt. Rich Puckett)  Download Full Image