MEDITERRANEAN SEA (Dec. 21, 2021) Gas Turbine Systems Technician (Mechanical) Fireman Jericho Perezdiaz, left, from Fajardo, Puerto Rico, and Damage Controlman 2nd Class Jillian Floyd, from Kinsteon, Alabama, review valve labels during an engineering training evolution aboard the Arleigh Burke-class guided-missile destroyer USS Jason Dunham (DDG 109), Dec. 21, 2021. Jason Dunham is operating as part of the Harry S. Truman Carrier Strike Group. The Harry S. Truman Carrier Strike Group is on a scheduled deployment in the U.S. Sixth Fleet area of operations in support of naval operations to maintain maritime security, and defend U.S., allied and partner interests in Europe and Africa. (U.S. Navy photo by Mass Communication Specialist 3rd Class Theoplis Stewart II)