171002-N-ZN152-0019 ATLANTIC OCEAN (Oct. 2, 2017) Civil Service Mariner Nate Grant, left, discusses small boat lowering procedures during patient evacuation training aboard the Military Sealift Command hospital ship USNS Comfort (T-AH 20). Comfort is underway to support humanitarian relief operations in Puerto Rico. The Department of Defense is supporting the Federal Emergency Management Agency, the lead federal agency, in helping those affected by Hurricane Maria to minimize suffering and is one component of the overall whole-of-government response effort. (U.S. Navy photo by Mass Communication Specialist 1st Class Ernest R. Scott/Released)