MEDITERRANEAN SEA (Dec. 21, 2021) Sailors aboard the Arleigh Burke-class guided-missile destroyer USS Jason Dunham (DDG 109) participate in security reaction force training, 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)