Chief Petty Officer Michael Presti, of the Coast Guard Atlantic Area Strike Team, inspects the storm drain system on South Fern Street in Arlington, Va., Monday, Feb. 8, 2016. The agencies are checking storm drain systems as part of an investigation to locate the source of an oil sheen that entered the Potomac River. ( Coast Guard photo by Petty Officer 2nd Class David Marin)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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Keywords: balt., baltimore, oil, response, sector, sheen