I've played it last night and even managed to kill my assigned targets, only to crash into a mountain top in the heavy clouds on my way home...
IIRC, there's no AFAC in the mission, just a Spec-Ops soldier on the ground. And in this mission, he'll contact you on his own once you've reached a certain position. So there's no need to use standard JTAC. I guess you could call it "story-driven"-comms ... Kinda like the JTAC-comms in "Surrounded" .. he'll tell you about targets as soon as you're in the air in that mission, but when you try and contact him yourself through the JTAC-menu, he'll just tell you that there's no further tasking available ...
Note: I'm using easy comms, so YMMV