Frikkin' heck!
One used to drive over the broken fence, park near the office-which was on the pan in front of the new South terminal. Walk to aircraft, wake security up (he was guarding the $$$$$$$$$$$$$$$$$m that we were taking in new currency to Berne) crank up and go. Landing was the same in reverse if customs met the airplane.
Mind you, 'twas in the days that One could walk round the south terminal at night with not a soul in the building...not even security.