Keywords: 120521-G-JL323-175 (7263226406).jpg A U S Coast Guard crew aboard a Response Boat-Small patrols Lake Michigan near Chicago during the 2012 NATO summit May 21 2012 Coast Guard crews enforced security zones during the event DoD photo by Petty Officer 2nd Class George Degener U S Coast Guard/Released https //www flickr com/photos/39955793 N07/7263226406/ 120521-G-JL323-175 2012-05-21 08 58 https //www flickr com/people/39955793 N07 U S Department of Defense Current Photos PD-USGov U S Department of Defense Current Photos https //flickr com/photos/39955793 N07/7263226406 2016-09-03 11 10 54 United States Government Work Lake Michigan Security North Atlantic Treaty Organization United States Coast Guard |