Damage Controlman 3rd Class Jerry Martinez, assigned to the engineering department of the aircraft carrier USS Harry S. Truman, left, gives an overview of a self-contained breathing apparatus to Mass Communication Specialist Benjamin Melvezzi and Aviation Boatswain's Mate Airman Eric Shipper during a Mind, Body, Spirit symposium on the ship's auxiliary barge. Harry S. Truman is undergoing a docking planned incremental availability at Norfolk Naval Shipyard to conduct maintenance and refurbish shipboard systems.