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Stephen Siller Tunnel to Towers memorial event

Robert Sutherland, of Farmingdale, N.Y., a member of the East Farmingdale Fire Department, crosses the finish line during the Stephen Siller Tunnel to Towers memorial event in New York, Sept. 25 2016. The run honors New York firefighter Stephen Siller who made his way from his Brooklyn firehouse through the Hugh Carey Tunnel, then known as the Brooklyn Battery Tunnel, to the World Trade Center, where he died in the collapse of the towers on Sept. 11, 2001. (Photo: Craig Ruttle/AP)

Tributes to 9/11 victims across the U.S.

Tributes were held around the country for the 10th anniversary of the Sept. 11 terrorist attacks on the U.S.