190213-N-MW964-1006 PORT HUENEME, Calif. (Feb. 13, 2019) Equipment Operator 2nd class Thomas Dahlke assigned to Underwater Construction Unit (UCT) 2 and Master Chief Petty Officer of the Navy Russell Smith discuss the capabilities of the new KM 97 Surface Supplied diving helmet. (U.S. Navy photo by Engineering Aid First Class Heather N. Salzman/Released)