Well, for a start the US command wouldn't necessarily be very happy about one of their people defecting to the Russians, so depending on the rank and importance of your character they might send special forces to look for you. Not to mention the fact that there are SpetzNaz in their territory anyway. So you and your new friends would be doing an escape-and-evade type action. Then later on in the campaign, it might turn out that NATO knows more about this situation then you do, so you have to infiltrate a base and find out the information. A mission like this might involve stealing keys, interrogating hostages, etc.
Anyway, those are just a couple of ideas. I think it'd be great to see an OFP campaign that keeps the player in the middle of a conflict, rather than just on the side of the "good guys", so keep up the good work!
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