Norman Weiss from Columbia University inspects the repairs made to cracks in the Tomb of the Unknowns. Weiss and other experts, at the request of the cemetery and Norfolk District, U.S. Army Corps of Engineers, gathered at the tomb the morning of Oct. 21, 2011 to scrutinize the repairs made in September. (U.S. Army photo/Kerry Solan)

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Photo by: Kerry Solan |  VIRIN: 111021-A-ET072-120.JPG