Chris Hayes takes viewers inside a virtual reality simulator designed to help police make better split-second decisions in life-or-death situations and then talks to three former NYPD officers about the challenges of training police officers to be ready for the worst -- but not to expect it.May 15, 2015
UP NEXT
GOP unable to raise a candidate to supplant Trump despite Trump's mounting legal problems
01:55
Putin's Russia preps for political stunt with trial of American Brittney Griner
01:36
American women face new era of very big, invasive government
04:07
Open question after fifth hearing: Who installed Klukowski at DOJ?
02:24
Detailing crimes may have discouraged Trump from pardons, despite multiple requests
11:37
January 6th hearing connects two major dots in Trump coup plot