Airmen aboard an HH-60G Pave Hawk helicopter from the 943rd Rescue Group, Davis-Monthan Air Force Base, Ariz., practice water rescue operations with pararescuemen from the 304th Rescue Squadron, Portland International Airport, Ore., in the Columbia River, near Rooster Rock State Park, Ore., July 27, 2013. (U.S. Air Force Photo/Staff Sgt. N. Daniel Delgado)