Former Chicago Bears player Hunter Hillenmeyer speaks during a news conference held by the Chicago Concussion Coalition Monday, Aug. 22, 2011, in Chicago as musician and recording artist Billy Corgan,... more 
Former Chicago Bears player Hunter Hillenmeyer speaks during a news conference held by the Chicago Concussion Coalition Monday, Aug. 22, 2011, in Chicago as musician and recording artist Billy Corgan, right, and Chris Nowinski, second from right, chairman of the coalition, and Chicago Alderman Latasha Thomas, left, listen. They were taking part in a workshop for high school coaches, administrators and trainers in Chicago, which in January passed an ordinance requiring public and private schools to take athletes who show concussion symptoms off the field. (AP Photo/M. Spencer Green) less 
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Associated Press | Photo By M. Spencer Green
Mon, Aug 22, 2011 5:05 PM EDT