Usually Headquarters are 4-5 trucks in a pentagon shape around the tgt waypoint set your flir to wht hot with full contrast and then adjust the brightness so they stand out on the targeting pod, they usually are protected by sa13's and sa15's and the worst of all sa19 grison on a Tunguska that will kill you out to 30,000 ft with ease. The key I have found is the mission planner has a waypoint management and you can add tasks and waypoints and list the combat groups you want to attackAll the sams are listed in RU-SA combat groups and there location will highlight as a blue triangle on the map , I put waypoints on them if I'm running it solo and depending how many sam sites there are it may be 4 so work them over first on the perimeter and load 2 triple racks of gbu-12 and laser your other targets from 20,000 to aviod AAA you will need to avoid the mig-29's at night that can be tough. Having escort of F-15's and a SEAD which may carry AGM-88 HARM locking killing at 22 miles with enough elevations 30 miles is documented (not sure)if its in the game haven't been there but if it is strike prior with them have some fighter escort and than do your hi value targeting. I have been doing it all on SIM solo as of late and it is great with a TM Wart flight stick and a AGM strike on your custom waypoints will improve your mission and campaign progress. Gluck