WASHINGTON - SEPTEMBER 23: Katherine Brearley, mother of the late Owen Thomas, a former University of Pennsylvania football player, holds her son's high school football helmet after testifying before the House Education and Labor Committee about the Protecting Student Athletes from Concussions Act on Capitol Hill September 23, 2010 in Washington, DC. Brearley's son, Owen, hung himself earlier this year at the age of 21. Brearley said that a posthumous diagnosis of Chronic Traumatic Encephalopathy in Owen's brain may have caused depression and lead to his suicide and that his intense physical play since the age of 9 may have contributed. (Photo by Chip Somodevilla/Getty Images)
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