LAKE HURON - Members of a salvage team from U.S. Coast Guard Air Station Detroit and crew members from the Coast Guard Cutter Bristol Bay examine video being taken by a commercial diver 50 feet below during salvage efforts, April 21, 2010. The team is working to salvage an HH-65C rescue helicopter from Air Station Detroit that crashed during a night training operation on April 20. The crews discovered no signs of pollution. U.S. Coast Guard photo by Petty Officer 1st Class John Masson.