171026-N-KT595-420 PACIFIC OCEAN (Oct. 26, 2017) Gas Turbine Systems Technician 3rd Class Usber Lopez, left, and Logistics Specialist 3rd Class Ramiro Lara, both assigned to the guided-missile cruiser USS Mobile Bay (CG 53), investigate simulated fires during a mass casualty drill. Mobile Bay is underway testing the updated AEGIS Baseline 9 weapons system in preparation for its upcoming deployment. (U.S Navy photo by Mass Communication Specialist 1st Class Chad M. Butler/Released)