Members of Coast Guard Maritime Safety and Security Team 91109, based in San Diego, conduct training aboard the U.S. Coast Guard Cutter George Cobb during a training exercise off the coast of San Diego on January 14, 2017. MSST San Diego is a specialized unit trained to defend against acts of terrorism, respond to matters of national security, and provide opposition against threats on the high seas. (U.S. Coast Guard photo provided by U.S. Coast Guard Cutter George Cobb)