I was thinking of making a Tonal airfield mission not long ago, but I went off the idea. Heres what I had...
2 Dshk MGs mounted in the upper windows of the terminal building.
Su25s in the hangers, locked of course, with the objective to destroy them using a bomb script.
AA positions. The tonal AA guns with hand-made sandbag bunkers built around them, objective to destroy they with RPGs before calling in airforce.
One Su25 on the runway. When you get close to the airport, a trigger is activated and some pilots run out to the plane, and get in. If you don't destroy it or the pilot fast, it will take off and wreak havoc among your armour support.
Thats about it. Feel free to use them in your idea