Time on target, first you produce a pistol, because of a real threat!
Your pistol is leveled at this threat, single or multiple threats. You fire to protect your life! Now the important TIME ON TARGET! for instantance, two assailants, with knives, at seven yards.
Turning your back and moving away, not an option! You aim and fire, then move! Once your pistol is aimed, now the true Time on target starts.
With your pistol aimed, you can fire three (for instance) rounds at each of these people, and move. Possibly 3 to 4 seconds! From draw to first shot. You need to be shooting before you move, mayhap a couple of seconds, but fast noises never harmed anyone.