Early Warning or False Sense of Security? Concussion Risk and the Case of the Impact-Sensing Football Chinstrap By Petty, Clifton D.; Shirley, Michael R. Journal of Critical Incidents, Annual 2012 Questia, a part of Gale, Cengage Learning. www.questia.com Publication information: Article title: Early Warning or False Sense of Security? Concussion Risk and the Case of the Impact-Sensing Football Chinstrap. Contributors: Petty, Clifton D. - Author, Shirley, Michael R. - Author. Journal title: Journal of Critical Incidents. Volume: 5. Publication date: Annual 2012. Page number: 55+. Society for Case Research. COPYRIGHT 2012 Gale Group. This material is protected by copyright and, with the exception of fair use, may not be further copied, distributed or transmitted in any form or by any means