A Coast Guardsman with Port Security Unit 305 services equipment on a 32-foot Transportable Port Security Boat while deployed to Naval Station Guantanamo Bay, Cuba, July, 18, 2017. PSUs are reserve staffed, self-sufficient, multi-mission capable deployable units that can operate within the U.S or supporting expeditionary operations overseas. U.S. Coast Guard photo by Petty Officer 2nd Class Matthew S. Masaschi