According to them, very well. Dave Grossman traveled around doing police training for years and this was part of his training

[In the widely shared clip filmed at one of Mr Grossman’s police training sessions, the former Army Lieutenant Colonel says: “Killing is just not that big a deal.”

He then talks about an officer describing that they had the “best sex” after fatally shooting someone, before adding that it is a “perk of the job”](independent.co.uk/…/police-training-video-kill-se…)