Petty Officer 2nd Class Brian Rodriguez, an aviation survival technician at Coast Guard Air Station Barbers Point practices knot tying techniques with Hyun Dai Kim and Sung Jun Lee with the Korean coast guard, during a vertical surface and self rappelling exercise at Makapu'u Lighthouse, Oahu, Nov. 16, 2017. Members from the Korean coast guard visited Air Station Barbers Point during a professional exchange as a way to share best practices. (U.S. Coast Guard photo by Petty Officer 2nd Class Tara Molle/Released)