Tiger, the taxing AI is a known issue, to get around that you can (1) Have your flight land first or (2) Land and dont shutdown, if the AI get stuck, start to roll to a different spot, I personally park on the SW ramp and wait for the flight to land.
I will check Mission 2, the only occasional issue is a premature crash of the C-130. Next time you take off and Pontiac is enroute from Suse to WP2, orbit and go to F2 view of the Chinooks, they should be landing SW of the target AO, takes them awhile to get to the WP though.