Traumatic brain injuries become defining injury for U.S. troops in post-9/11 conflicts

More than 350 U.S. service members have been injured since military action against Iran began in February. The majority of those are traumatic brain injuries. TBIs have become the defining injury of post 9/11 conflicts, and the symptoms can often linger for years, or even a lifetime. Liz Landers discusses more with Jayna Moceri Brooks, who has studied combat-related brain injuries for years.