A small oil sheen can be seen, trailing to the right of the photo, the Arthur J, an 110-foot dredge barge, sits in Lake Huron a mile offshore Lakeport, Mich., surrounded by containment boom, July 20, 2012. Federal, state and local agencies responded for clean up and salvage operations after the Arthur J sank in the early morning hours of July 19. U.S. Coast Guard photo by Petty Officer 2nd Class Levi Read.