Hi. I'm having the same problem with Mission 15, Final Nail with the Sabre. I'm a noob when it comes to DCS, but I believe I updated to the recent Beta that was released this past Wednesday (Aug. 19th) 2.5.6.52437 and I'm still getting radio messages that the IL-76 and escort fighters have already departed Soganlug before I have time to fire up my Sabre at Beslan. Like I said, I'm pretty new to DCS, so I don't know what "flying stable' means. Do I just need to wait a few more days or is there something I need to do while I'm in the game, etc? This is a fantastic campaign! I appreciate any advice. Thanks!