Two GBU-24A will destroy a bunker. As for the F-18C escort mission, I modified the F-18C flying altitude on their ingress and set them a pop up attack, it ridiculous to bomb a target flying at 15000ft within range of an SA-10, with Su-35s all over the place.
Yeah, I should probably do that! It is practically suicide for those planes to fly at 15k feet for that mission! I've done an 8-plane flight, fitted half the flight with CAP and the other half with SEAD to no avail. I've tried to go commando and take out the SAMs along the F-18C flight route only to find the F-18Cs destroyed by the SU-35s (even with F-14 escort and my flight with CAP armaments set to "engage bandits")!
I didn't have any problem with the other escort missions previous to this one. That SA-10 takes the cake!