Lester Holt was granted unprecedented access to the NYPD Critical Response Command to see how the elite unit trains to deal with evolving terror threats.July 19, 2017
UP NEXT
Big data's potential to discriminate
Justice Dept. charges three Iranians with hacking computer networks in global scheme
01:43
FBI says fraud on LinkedIn a ‘significant threat’
05:08
REvil hacking group websites go offline
04:04
New report says Lafayette Square Park was not cleared for Trump to hold photo op
02:35
U.S. threat assessment singles out China, climate change ahead of terror groups