9/11: Thwarting the second wave of attacks

DR. JAMES MITCHELL SAYS, WHEN HE FIRST BEGAN INTERROGATING HIGH-VALUE DETAINEES AT CIA BLACKSITES, HE THOUGHT ABOUT THE NEARLY THREE-THOUSAND LIVES LOST ON SEPTEMBER 11TH. THE RETIRED AIR FORCE PSYCHOLOGIST INTERROGATED 9/11 MASTERMIND KHALID SHEIFK MOHAMMED AFTER THE ATTACKS.