Coast Guardsmen from Port Security Unit 305 aboard a 32-foot Transportable Port Security Boat patrol the waters off the coast of Guantanamo Bay, Cuba, Wednesday, July 19, 2017. PSUs are reserve-staffed units who train in preparation for deployments capable of conducting joint operations worldwide in support of the Department of Defense. U.S. Coast Guard photo by Petty Officer 2nd Class Matthew S. Masaschi