Jim Tyndall, Plumbing Design and Installation Inc. master plumber, burns through copper piping during plumbing installation of the Jefferson Chambers Dormitory kitchenette at Ellsworth Air Force Base, S.D., July 15, 2013. Old cast iron plumbing is now being replaced with up-to-date polyvinyl chloride piping in every dorm kitchenette to provide for a leak free plumbing system. (U.S. Air Force photo by Airman 1st Class Anania Tekurio/Released)