The acting was so bad that is so difficult to believe in a movie with so crazy ideas. The expressions of the guards and their reactions were so bland that not even rookie actors in a high school play are so unbelievable.
So much money on a plane an such lousy and so few guardians on board. Okay a 747 is a huge plane, but you don't transport that amount of money so frequently as to have such an elaborate electronic equipment and a vault on board to "safeguard" the valuables. And also the interior of the "vault" is so unrealistic with high ceilings and very ample rooms, you are not inside a building, but a plane and don't have the luxury of empty spaces.
Blowing a hole on the side of a flying plane is no small issue but here the plane keeps flying as if nothing happened. There are so many inconsistencies that made me gag.