A U.S. Coast Guard Port Security Unit 312 32-foot Transportable Security crew conducts a safety zone around the USNS Vice Adm. K.R. Wheeler (T-AG 5001) during Operation Pacific Reach Exercise 2017 in Pohang, Republic of Korea, April 8, 2017. OPRex17 is a bilateral training event designed to ensure readiness and sustain the capabilities which strengthen ROK-U.S. Alliance. Coast Guardsmen will serve as part of combined task group conducting ports, waterways and coastal security operations protecting U.S.-ROK assets and personnel exercising an Area Distribution Center (ADC), an Air Terminal Supply Point (ATSP), Logistics Over the Shore (LOTS), and the use of rail, inland waterways, and coastal lift operations to validate the operational reach support. (U.S. Coast Guard photo by Petty Officer 1st Class Rob Simpson/released)