Jerry
A CCW isn't a totem, nor does it magically fiend off the bad element. Furthermore, a CCW is of no use if you can not employ said CCW.
BLUF:
You still have to hit the target.
One Shot Stop = locomotive with the target tied across the tracks.
Staying alive means you are aware, mentally prepared, proficient and fast in liberally applying proper shot placement.
Have you thanked a LEO, Firefighter, Medical / other emergency service worker, and least we forget the military lately?