160806-N-FP878-088 MEDITERRANEAN SEA (Aug. 6, 2016) Gas Turbine Systems Technician (Mechanical) 2nd Class Alvah Johnson, from Baton Rouge, Louisiana, monitors the simulated halon run time during an engineering training team evolution aboard USS Ross (DDG 71). Ross, an Arleigh Burke-class guided-missile destroyer, forward-deployed to Rota, Spain, is conducting naval operations in the U.S. 6th Fleet Area of Operations in support of U.S. national security interests in Europe and Africa. (U.S. Navy photo by Mass Communication Specialist 1st Class Theron J. Godbold/Released)