KODIAK, Alaska - Petty Officer 1st Class Mathew Shackelford, an aviation maintenance technician with Air Station Kodiak, taps a piece of sheet metal into place for correct measurements for an HC-130 Hercules airplane skin repair March 29, 2012. Shackelford has obtained metal working skills throughout his Coast Guard career working in the aviation field. U.S. Coast Guard photo by Petty Officer 3rd Class Jonathan Lally.
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