"I too have "secured" persons in the dark ( some raids are perform in the night and you do not turn on the lights as you run through the house ) that after the fact I realize I was a bit to rough on, but that is the nature of the job. The first time you relax and slow down is the time someone sees you coming and fires shots through the door at you, hits you with a baseball bat, takes a hostage, or jumps out a window."
Must be rough to have to work under that sort of paranoiac anxiety.
I lasted 12 years ( 7 on SWAT ) before I went to relaxed pastures.