Increasing Civilian and Friendly Forces in Crash Sites and Terror Mission

I was wondering how exactly I could go about increasing the number of civilians and friendly AI I would encounter during crash sites and terror missions. I always thought seeing like 3 civilians and 2 police officers in the middle of an industrial area at a crash site was a bit... low... and would like to increase the numbers.

That would require editing each map to give them higher civilian numbers.

There is a file - I forget which now - where there's variables for the number of NPC units on a mission. I'm not sure how that interacts with the values for the individual maps though and it might not do anything at all. I'll find the file later though so you can try it out; I'd be interested to know whether it works myself.

missiontypeprops. Though, as kabill says, the numbers might not do anything (I don't remember ever seeing 20 friendly/civs in a terror site), but changing their guns works.

Can you have it so that different regions have different numbers? If you take a terror site in the US there should be a lot of armed civilians whereas in the UK there should be more unarmed ones.

No, the best you could do is have a difference between the general terror missions and the Soviet ones.