These are a couple of mod ideas that I think would be very possible but I haven't been able to find them anywhere:
1: Access Aircraft through heli-pad.
2:Call someone in the phone to collect you and when you get in he car you are brought to the HQ instantly.
1: Access Aircraft through heli-pad.
2:Call someone in the phone to collect you and when you get in he car you are brought to the HQ instantly.