171009-N-ZN152-0031 SAN JUAN, Puerto Rico (Oct. 9, 2017) Naval Air Crewman (Helicopter) 2nd Class Christian Bass, assigned to the "Sea Knights" of Helicopter Sea Combat Squadron (HSC) 22, retrieves empty oxygen tanks from Centro Medico in San Juan, Puerto, to be refilled aboard the Military Sealift Command hospital ship USNS Comfort (T-AH 20) utilizing the ships two oxygen-producing plants. Comfort is underway providing medical services in the vicinity of Arecibo, Puerto Rico, with additional visits being planned around the island. The U.S. Health and Human Services and Puerto Rico Department of Health representatives are prioritizing patients at each stop prior to Comfort's arrival. 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)