GULF OF OMAN (April 12, 2019) Sonar Technician (Surface) 2nd Class Jesus Ibarra, from Phoenix, looks through a door as a boundary-man during a toxic gas drill aboard the guided-missile cruiser USS Mobile Bay (CG 53) in the Gulf of Oman, April 12, 2019. Mobile Bay is deployed to the U.S. 5th Fleet area of operations in support of naval operations to ensure maritime stability and security in the Central Region, connecting the Mediterranean and the Pacific Ocean through the western Indian Ocean and three strategic choke points. (U.S. Navy photo by Mass Communication Specialist 3rd Class Nick Bauer)