Covert Ops

[Foxhound74]

Is there a way to make it so soldiers wont target you unless they can see you have a weapon drawn?
Example. The mission starts as you being a civilian with a handgun. You have to sneak into the city kill a enemy officer then escape.
I want to make it so the soldiers wont target you unless you have your weapon out so you can't just walk around pointing a gun at guards.
(And if it makes any difference the target for the mission is a rogue American Colonel.)
Thanks in advance.

[Ferenczi]

Once I've started making a similar mission.
If by escaping you mean fighting his way out of the city then you could try this:
The rather simple way I did it was to to make the player start off by having no handgun and being set as a captive. The player would be however, given an action like "Pull out the pistol" that would execute a script, which would addweapon him his gun (that we can say he was concealed-carrying all the time), and falsify his captive state.