Continuity mistake: When the team is escaping with Al, BA swipes a truck. After loading everyone in, he puts a pin in to hold the gate on the driver's side. When they meet up with Face & Murdock at the helicopter, Hannibal jumps out, pulls one pin from the passenger's side, and the gate swings down.
Continuity mistake: After Hannibal tosses the grenade that flips the jeep, if you look closely, the man in the back end of the truck is wearing a white hat. When the camera is close up on Hannibal, he's not wearing a hat.
Answer: Several times, Face would pose as a doctor to get Murdock out of the Mental Hospital. How easy would it have been to convince airport officials that he was a doctor taking a sedated patient on board? Or simply tell them, this man is afraid of flying, so he had to be sedated. They could say, "Believe me, you don't want this man to be awake."