SOM with NO airsupport on mission completion?

[mcbain99 10]

Hey guys, I want to set up Secops so that on completing a mission you won't get SOM controlled CAS (I have CAS controlled through Mando airstrike mod).

I have searched extensively but the question doesn't even seem to have come up, all I can find is how to activate CAS without random missions. I need the opposite. Any ideas?