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160414-N-FJ200-029 ALEXANDRIA, Va. (April 14, 2016) Blair Atcheson, left, Naval History and Heritage Command (NHHC) historical preservation coordinator, uses multiple rulers to take the length and curvature of a historical timber while Dr. Alexis Catsambis, left, cultural resource manager, records the information. NHHC Underwater Archaeology Branch (UAB) assisted city of Alexandria archaeologists with measuring and recording the remains of an 18th century ship after it was discovered at a construction site in Alexandria, Va. (U.S. Navy photo by Mass Communication Specialist 1st Class Clifford L. H. Davis/Released)
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