US Coast Guard
Coast Guard Sector San Francisco #News . Here is footage from an USCG Unmanned #Aircraft Systems pilots survey the 90-foot #Naval vessel American Challenger near Dillon Beach, California, April 8, 2020. The American Challenger was being towed by the tug Hunter on March 5, 2020, when the Hunter lost propulsion and the American Challenger grounded on a rocky shoreline north of Dillon Beach.