190730-N-UN744-0147 LAGOS, Nigeria (July 30, 2019) U.S. Coast Guard Petty Officer 2nd Class Chad Vacco, with the U.S. Coast Guard Law Enforcement Detachment Pacific and embarked aboard the Spearhead-class expeditionary fast transport ship USNS Carson City (T-EPF 7), updates a tactical combat casualty care scenario during a visit, board, search and seizure drill with members of the Nigerian Navy's special boat service team in Lagos, Nigeria, July 30, 2019. Carson City is deployed to the Gulf of Guinea to demonstrate progress through partnerships and U.S. commitment to West African countries through small boat maintenance assistance, maritime law enforcement engagement, and medical and community relations outreach. (U.S. Navy photo by Chief Mass Communication Specialist Travis Simmons/Released)