170719-M-UH172-022 PACIFIC OCEAN (July 19, 2017) A landing craft air cushion approaches the expeditionary transfer dock ship USNS John Glenn during exercise Pacific Horizon 2017, July 19, 2017. Pacific Horizon 2017 is a Maritime Prepositioning Force (MPF) exercise designed to train I Marine Expeditionary Force (MEF) and components of Naval Beach Group 1 (NBG-1) Marines and Sailors on arrival and assembly operations as well as follow-on Marine Air Ground Task Force actions to ensure that the right equipment, supplies and tools get to the right people to be employed in a crisis response, humanitarian assistance or amassing combat power ashore from sea. (U.S. Marine Corps photo by Lance Cpl. Roxanna Gonzalez/Released)