The VTOL mission editor isn't out yet, but I'm preparing one before it releases that I hope will help people practice SEAD and evading radar sites, since there won't be any enemy aircraft. 

You can go through the valleys to hide from the SAMs, but it'll expose you to IR launchers which are easy to evade with flares. Once you clear it out there's a nice payoff of a fuckoff big base to bomb.