That was NOT a CIA jet. It was a jet owned by a sleeze ball South lorida charter operator who had a history of running sleeze ball south florida charter operations.
As it happens a friend of mine who used to work line service down at FXE put a lot of fuel into the airplane in his time in addition to knowing at least one of the pilots on board. It's been a while since we talked about it as IIRC this was back in the late summer/fall when the accident happened.
It's not hard to run a G-II out of fuel if you're flying it down in the weeds attempting to avoid radar
