Since 9-11, over 300K soldiers have returned with brain injuries, caused in many cases by blast exposure. Researchers fear that exposure could lead to the degenerative brain disease CTE and cripple a generation of warriors. Sharyn Alfonsi reports tonight. https://t.co/xe8Dnm9PxG

— 60 Minutes (@60Minutes) January 7, 2018

A George W. Bush legacy … https://t.co/neEo4zFjDU

— Marc Caputo (@MarcACaputo) January 7, 2018