Terrorism expert Malcolm Nance and NBC News' Ayman Mohyeldin discuss the fact that San Bernadino shooting suspects Syed Farook and Tashfeen Malik were not under any active surveillance from the FBI and what this means for the fight against ISIS.Dec. 4, 2015
UP NEXT
Capt. ‘Sully’ on Boeing’s aviation safety: ‘They have lost their way’
06:08
Trump pledges to combat crime while attending wake for NYPD officer
02:08
Debris field from Baltimore bridge collapse is 'very dangerous' for divers: Tiburon Subsea CEO
05:34
It's Opening Day! Major League Baseball season kicks off today
02:56
'We Were the Lucky Ones' follows a family's escape from the Holocaust
09:57
BREAKING: Sam Bankman-Fried sentenced to 25 years in prison