Hand line testing and operation in sub-zero temperatures
Grand Forks Air Force Base, N.D., lead firefighters Marcus Carpenter (left) and Patrick Stevens successfully operate a hand line in sub-zero temperatures during recent tests of discharge systems on their Fire Emerency Services fire suppression vehicles. Air Force Civil Engineer Center Fire Emergency Services division headquartered at Tyndall AFB, Fla., spearheaded the tests, proving the discharge systems will perform in extreme cold weather conditions. (U.S. Air Force courtesy photo)