This is highly unlikely, Firstly military comms equipment and drones use their own proprietary comms equipment The coms equipment is typically a combination of (AM/FM/TacSat) it wouldn't be running through a firewall that handles phone and internet (which is almost always handled by a separate contractor even in 08)

I'm not going to say it didn't happen, because its the military, but that is super uncommon, and against so much info sec, it just doesn't stand to reason.