A small selection of missions created for OFP Cold War Crisis. They require no addons and so are compatible with both OFP and Resistance.
Defend Le Port from elite Soviet assault troops in Ocean by Live.
There are two missions by David Le Vengeur (authoring as QAD): a Training Day may be just what's needed to develop your skills. Then you should be ready for A Special Mission.
Finally, take an A10 on a hairy bombing run in Strategic Strike by Spy.