The Coast Guard, along with other federal, tribal, state and local agencies, is conducting a full-scale, anti-terrorism and oil spill response exercise in the Port of Duluth-Superior Aug. 28-29, 2013. In addition to Coast Guard Marine Safety Unit Duluth, participants in Operation Peeking Duck will include maritime industry representatives from the states of Minnesota and Wisconsin, oil spill response agencies, as well as representatives from fire, emergency management and local law enforcement agencies.