I'm getting ready to do some modern air-gaming, so picked up a number of useful items from Fight's On with the plan to paint them on an "as needed" basis. My first "need" was a SAM site in the desert, so I've painted one up:
As you can see, the pieces are suited for use on a hexagonal grid - though in my case, they'll actually be more like markers on a gameboard. Here's an extreme close-up:
My painting scheme was simple: brown base, dark brown wash, tan drybrush, then the details were painted in colors that would stand out.
I'm not sure what scale the Fight's On scenics are, but I think it's safe to say that they're "way down there on the ground" scale. 
Here's what they look like next to a 3mm jet model that I'm working on:
And, for reference, next to 28mm and 15mm figures (which you'll see more of in future TMP articles):
I look forward to painting more of these up, in various landscapes, as the campaign proceeds.