PACIFIC OCEAN (April 5, 2021) Hull Maintenance Technician 1st Class Phoeun Tem, right, from Sacramento, Calif., adjusts a gas mask for Logistics Specialist 2nd Class Ernesto Espinosa, left, from Chicago, during a chemical, biological and radiological drill aboard the Independence-variant littoral combat ship USS Tulsa (LCS 16). Tulsa is currently operating in U.S. 3rd Fleet area of operations. (U.S. Navy photo by Mass Communication Specialist 2nd Class Colby A. Mothershead)