SANTA RITA, Guam (April 21, 2021) Gas Turbine Systems Technician (Mechanical) 1st Class Alexson M. Hoff, from Long Beach, Calif., annotates the procedural steps for a gas turbine line shaft bearing installation aboard Independence-variant littoral combat ship USS Tulsa (LCS 16). Tulsa is currently operating as part of U.S. 3rd Fleet. (U.S. Navy photo by Mass Communication Specialist 2nd Class Colby A. Mothershead)