Coast Guardsmen from Port Security Unit 305 aboard a 32-foot Transportable Port Security Boat enforce a security zone off the coast of Naval Station Guantanamo Bay, Cuba, Wednesday, July 19, 2017. PSU 305 is deployed to Naval Station Guantanamo Bay to provide mission support for the Department of Defense. U.S. Coast Guard photo by Petty Officer 2nd Class Matthew S. Masaschi