That video shows a murder. The Airman did absolutely nothing that was a threat to that officer. He overreacted to the mere sight of a firearm.
Yep, but manslaughter:
“ Manslaughter is killing someone without planning the crime ahead of time or in a situation where killing was not intentional. Murder is killing someone by planning the crime ahead of time.”
https://www.lawinfo.com/resources/criminal-defense/murders-and-manslaughters.html#:~:text=Manslaughter%20is%20killing%20someone%20without,the%20crime%20ahead%20of%20time.