Crewmembers from the U.S. Army Corps of Engineers Marine Vessel Puget attach oil spill containment boom to a piling during a boom deployment exercise near the Chittenden Locks in Seattle, May 11, 2016. Exercise participants included Corps and Coast Guard personnel who practiced roles and responsibilities, tested response capabilities, learned boom deployment techniques and talked through appropriate command management structures. U.S. Coast Guard photo by Petty Officer 1st Class George Degener.