The AI cannot taxi, it would be more realistic if they went to the nearest yellow line and followed it to the runway.
The Greyhawk needs to have manual fire option for turret, it randomly fires and when locking onto a target the UAV will swerve and move all over the place trying to get a straight run at the target.
Also getting stuck in the ground if you stop moving. And when ordered to leave Tent Hangar, it will turn and crash into the sides, and there is no reverse so it is useless for rest of mission.