160123-N-KK081-056 U.S. 5th FLEET AREA OF OPERATIONS (Jan. 23, 2016) – Sailors, attached to Amphibious Construction Battalion (ACB) 1, Naval Beach Group (NBG) 1 and USS Oak Hill (LSD 51), work together to lower an anchor onto an Improved Navy Lighterage System intermediate module. ACB 1 and NBG 1 participated in a Navy, Marine Corps and Army joint Maritime Prepositioning Force offload exercise.(U.S. Navy photo by Mass Communication Specialist 2nd Class Eric Chan/Released)