The challenge traumatic brain injury poses for U.S. troops

When Iran fired missiles at Iraqi bases housing U.S. troops in early January, there were no fatalities, but weeks later, the Pentagon said 50 U.S. service members suffered traumatic brain injuries in the attack. Now questions are being raised about their condition, as well as the information's delayed release. Nick Schifrin talks to psychiatrist Stephen Xenakis, a retired Army brigadier general.