Petty Officer 1st Class Conan Blanchard, a marine science technician at Coast Guard Sector Detroit, monitors the lightering process during salvage operations of the sunken dredge barge Arthur J, July 22, 2012. The Arthur J and the tug Madison sank in Lake Huron one mile off the shore of Lakeport, Mich., July 19. 2012. U.S. Coast Guard photo by Petty Officer 2nd Class Levi Read.