170523-N-YG116-013 BALTIC SEA (May 23, 2017) A reservist with Beach Master Unit 2, heading to the beach as part of Operation Saber Strike 17, watches as the Maritime Prepositioning Force Container ship USNS SGT William R. Button (T-AK 3012) grows smaller on the horizon. SGT William R. Button delivered mission-critical equipment belonging to Marine Corps Combat Logistics Regiment 45, 4th Marine Logistics Group, to the Port of Ventspils, Latvia.Saber Strike is a long-standing U.S. Army Europe-led cooperative training exercise designed to improve joint interoperability through a range of missions that prepare participating nations to support multinational contingency operations. (U.S. Navy photo by Lt. j.g. Rob Kunzig/Released)