Crew members from the Coast Guard Atlantic Strike Team, Coast Guard Sector Buffalo and Coast Guard Sector Detroit work together to place more than 1,200 feet of boom Aug. 22, 2017 during an exercise in the St. Lawrence Seaway in Clayton, New York. The exercise tested the CANUSLAK agreement processes and other response strategies for a spill on the St. Lawrence River. (U.S. Coast Guard photo by Petty Officer 2nd Class Christopher M. Yaw)