Participants in a Coast Guard-led preparedness for response exercise demonstrate methods for using boom to control the spread of an oil spill on the Maumee River, Aug. 12, 2014. Hosted by Coast Guard Marine Safety Unit Toledo, the PREP exercise scenario tested stakeholders’ ability to respond within a unified incident command framework to a simulated allision of a tank barge with a submerged object, causing a worst-case discharge within the Port of Toledo and Maumee Bay that could affect the port’s environmentally-sensitive areas. The goal of the exercise, which drew over 400 participants, was to improve the Western Lake Erie Area Contingency Plan and build the area’s readiness to respond to an actual oil spill.