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U.S. Coast Guard Maritime Enforcement Specialist 3rd Class Jon Sykes, left, and Maritime Enforcement Specialist 1st Class Colin Rankin, both with Marine Safety & Security Team Boston, provide security at Rowes Wharf in Boston April 15, 2013.
Boston-based Coast Guard units increased their patrols after two improvised explosive devices were detonated near the finish line of the Boston Marathon, killing three people and injuring more than 100. (DoD photo by Petty Officer 3rd Class MyeongHi Clegg, U.S. Coast Guard) Original public domain image from Flickr
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