The Coast Guard Cutter Alder, home-ported in Duluth, Minn., transits Superior Bay with its deployed spilled oil recovery system during Operation Peeking Duck, Aug. 28, 2013. The full-scale exercise involving federal, tribal, state and local agencies from Minnesota and Wisconsin simulated an oil spill in the Port of Duluth-Superior. (Coast Guard photo by Chief Petty Officer Alan Haraf)