Concussions
A basic cadet at the U.S. Air Force Academy completes a concussion history and symptom inventory here June 13, 2015. All cadets are taking part in a three-year, $30M collaboration between the Defense Department and the NCAA to study concussions. Eighteen universities in the United States and the U.S. military service academies are taking part in the research project. (U.S. Air Force photo/Jason Gutierrez)