SAULT STE. MARIE, Mich. - A U.S. Coast Guardsman stands on the stern of a U.S. Customs and Border Protection vessel after the boat was launched to provide a security zone around the Soo Locks in the St. Marys River near Sault Ste. Marie, Mich., as part of a maritime security exercise there Sept. 15, 2011. Representatives from various federal, state and local and Canadian agencies, tribes, and stakeholders participated in the exercise, built around a scenario involving a bomb placed at the Soo Locks and designed to strengthen partnerships among all those involved. (U.S. Coast Guard photo by Petty Officer 2nd Class Lauren Jorgensen)