Crewmembers from Coast Guard from Maritime Safety and Security Team 91109, based in San Diego, fast-rope from a California Air National Guard 129th Rescue Wing HH-60G Pave Hawk helicopter during an interagency training exercise on the San Francisco Bay, April 25, 2017. Coast Guard servicemembers conduct interagency training to react, interdict and neutralize potential threats and perform a broad range of port security and harbor defense missions, both domestic and foreign. U.S. Coast Guard video by Petty Officer 2nd Class Matthew S. Masaschi.