Members from Coast Guard Maritime Safety and Security Team 91109, San Diego, prepare to be hoisted to a U.S. Navy Helicopter Sea Combat Squadron Four MH-60S Knighthawk Helicopter aboard the USS Carl Vinson in support of the carrier’s pre-deployment cruise Dec. 29, 2016. MSST San Diego is trained to be a first responder to potential terrorist situations, deny terrorist acts, perform security actions against non-compliant and opposed actors, and perform tactical facility entry. (U.S. Coast Guard photo by Petty 1st Class Rob Simpson/released)