Episode description
In the wake of the attacks of 9/11, the United States took several measures at home and abroad to prevent such atrocities happening on its soil again. Twenty years later and after two bitter wars in Iraq and Afghanistan, did America get its response to the attacks of 9/11 right?
(U.S. Army Staff Sergeant in the Shahi Kot mountains, Afghanistan 2002 . Credit: Jim Hollander/Getty Images)