A crew participating in an oil spill exercise in Toledo prepares to deploy a "Boomvane," a self-propelled tool powered by the current, on the Maumee River on Tuesday, Aug. 12, 2014. The multi-agency exercise brings together federal, state, and local agencies and their industry partners to practice and refine emergency response procedures. (U.S. Coast Guard photo by Chief Petty Officer John Masson)