181011-N-ZK016-0106 ATLANTIC OCEAN (Oct. 11, 2018) Hospital Corpsman 2nd Class Travonta Jenkins administers an influenza virus vaccine to a Sailor in the medical ward aboard the Wasp-class amphibious assault ship USS Iwo Jima (LHD 7), Oct. 11, 2018. Iwo Jima is underway prior to participating in Trident Juncture 2018 which is a NATO-led exercise designed to certify NATO response forces and develop interoperability among participating NATO and partner nations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Joe J. Cardona Gonzalez/Released)