Combat helmets have always been made to protect against blunt objects, not blast waves. Despite improvements in helmet design, battlefield brain injuries continue.
Of the 109 who were injured, 76 have returned to duty. But 21 service members who were taken from Iraq to Germany for medical care have now been brought to the U.S.
More than half the American troops diagnosed with concussions were transferred from the Iraqi base that was attacked to Germany or the U.S.
Two Triad universities have received a grant to continue participating in the largest-ever study of sports-related concussions.