The LAPD is using 3D animation, measurements of an officer’s heartbeat, stress level, and more in an interactive virtual space to prepare for real-life scenarios. Chief of Police Michel Moore sees virtual reality as a game changer for officers, especially in de-escalation training. This comes as use-of-force tactics come under intense scrutiny. The LAPD reported 37 police shootings last year, up from 27 in 2020. | NBC Nightly News with Tom Llamas