The mother of Lt. j.g. Charles Thigpen IV places flowers at the Humboldt Bay Memorial before a memorial ceremony at Coast Guard Sector Humboldt Bay, June 8, 2017. Thigpen was one of four crewmembers lost in the line of duty 20 years ago when the MH-65 Dolphin helicopter CG-6549 crashed 57 miles west of Cape Mendocino, Calif., during a search-and-rescue mission to save five sailors in a storm. U.S. Coast Guard photo by Petty Officer 3rd Class Sarah Wilson.