Petty Officer 1st Class Jason Dernehl, a machinery technician at Coast Guard Station Philadelphia, on patrol aboard a 25-foot response boat during a vessel escort Wednesday, Sept. 10, 2014, on the Delaware River. Station Philadelphia carries out numerous Coast Guard missions, including ports, waterways, and coastal security, and search and rescue. (U.S. Coast Guard photo by Petty Officer 1st Class Nick Ameen)
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