What I call the "Gunsite Waggle" is (in my opinion) useless. It's where students on a static line know they're supposed to "scan," so immediately after they stop shooting, they move their gun from side to side and reholster. I've seen it many times when people doing didn't see ANYthing during the alleged "scan." They were completing a motion that they believed was expected of them.
If someone is really scanning after a shooting and not just waggling their gun or doing a pirouette:
- I don't think it's a great idea to stand in the same spot (even if they are spinning) while they do it.
- I don't think it's a great idea to turn their back completely on a known threat (what they just shot) trying to see what else might be there.
- I don't think it's a great idea to spend the time to look, but not really see anything.
- I don't think it's a great idea to take minutes to do it (and yes, I've seen someone take over a minute several times in the same day).
- I don't think it's a great idea to do it with an empty gun, or with a gun whose status is unknown.
Yes, we see a lot of that and I think it is probably the biggest argument against the scan. I really like the way Randy Harris taught me a 360 scan. It is much like when you do a MUC problem looking for other involved parties by stepping off line and maybe even circling to get a view without giving up your view of the immediate problem. Of course this is a little tougher to do with a firing line of people and not applicable to every situation. Anyway I am getting a little in the weeds by just focusing on the post fight scan.