CHICAGO, IL - SEPTEMBER 24: Alejandro Villanueva #78 of the Pittsburgh Steelers stands by himself in the team's tunnel during the national anthem prior to a game against the Chicago Bears at Soldier Field on September 24, 2017 in Chicago, Illinois. Villanueva, a former Army Ranger who served terms in Afghanistan, was the lone Steeler to appear during the anthem. The Bears won 23-17 in overtime. (Photo by Joe Robbins/Getty Images)
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