Petty Officer 3rd Class Jamie Hoover (left) and Petty Officer 2nd Class Jason Starking, both marine science technicians from Coast Guard Sector Detroit, discuss and take note of debris that floated ashore near Lakeport, Mich., July 20, 2012. The Coast Guard and partner agencies walked nine miles of shoreline searching for shoreline impact from an oil spill in the waters of Lake Huron after the Arthur J, an 110-foot dredge barge, sank in the early morning hours of July 19. U.S. Coast Guard photo by Petty Officer 2nd Class Levi Read.