FlidMerchant

I assume this is for mp missions if you're respawning, and I only do single player, but a repeating trigger with the condition alive truck and then exec the script in the activation field?

Not sure disableai works in arma2. Try making a high ranking enemy character with a probability of presence of 0%, and group him to the civilians. This will glitch them into being the side of the officer. You could also try sniper dostop true sniper dotarget civ sniper dofire civ although I'm not sure if stopping him will prevent him from doing this