[KDN]

RRR is not tied to a homebase necessarily. It is related to an airfield and can be modified with homebase circle or/and input of coordinates (manually inserted in mis file OR load.ini of maps) to designate areas within the airfield where the RRR can take place.
I have RRR in Online dogfight AND Cooperative missions as well as Offline, quick mission builder templates, single missions and Campaigns. As I said, if you can open a mission in FMB, you can have it.