160305-N-FP878-193 MEDITERRANEAN SEA (March 5, 2016) Ensign David Nelson from Longview, Texas, reports simulated casualties during a toxic gas drill aboard USS Carney (DDG 64) March 5, 2016. Carney, an Arleigh Burke-class guided-missile destroyer, forward deployed to Rota, Spain, is conducting a routine patrol in the U. S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo by Mass Communication Specialist 1st Class Theron J. Godbold/Released)