Command: Modern Air / Naval Operations is on sale on Steam for 50% off right now, which brings the price down to $40. This is a -wonderful- "game" if you like to take things from a top down, operational level.

 

http://store.steampowered.com/app/321410/

I saw this! Am thinking hard about getting it...

It's a pretty fun game. I've got the Northern Inferno campaign too, but I haven't really given it a good try yet. There's tons of missions in the Community Mission Pack, and I think the steam version has Workshop support now too. 

 

You'll really need to know (or learn) different weapon systems though. What is the range and capability of such and such SAM site. How far can my F-18s fly before they'll be bingo fuel. What ECM system will be able to foil this SAM so I can run a SEAD, etc.

 

Steep learning curve, but very fun!