170724-N-TV230-374 SAN DIEGO (July 24, 2017) Hospital Corpsman 3rd Class Chris Bollinger, left, and Hospital Corpsman 2nd Class Jesus Contreras put an artificial amputated leg on ice during an integrated mass casualty drill focused on the use of hyper-realistic props for the benefit of medical personnel aboard the Nimitz-class aircraft carrier USS Theodore Roosevelt (CVN 71). Theodore Roosevelt is moored in its homeport of San Diego, Calif. (U.S. Navy photo by Mass Communication Specialist 3rd Class Bill M. Sanders/Released)