170831-N-UM543-174 ARABIAN GULF (Aug. 31, 2017) Sailors respond during an emergency medical response drill aboard the aircraft carrier USS Nimitz (CVN 68). Nimitz is deployed to the U.S. 5th Fleet area of operations in support of Operation Inherent Resolve. While in this region, the ship and its carrier strike group are conducting maritime security operations to reassure allies and partners, preserve freedom of navigation, and maintain the free flow of commerce. (U.S. Navy photo by Hospital Corpsman 2nd Class Rachel Kuebler/Released)