Visible crew/equipment: When the passengers find out about the bomb and Striker tackles the man who has it, when the briefcase with the bomb in it goes in the air, you can see a string attached to it to pull it up. (00:59:25)
Visible crew/equipment: At the start, when the airplane cleaner goes into the airplane and he's listening to "Car Wash" and Dunn checks gravity mode, you can see the wires holding the airplane cleaner up. (00:17:40)