Visible crew/equipment: Right after the race car goes over the bridge the scene changes to the Angels' HQ & there is a close-up of the TV screen that they are watching. As the camera zooms out you can very clearly see the reflection in the TV of the cameraman backing away from the screen with his eye to camera. (00:33:00)
Visible crew/equipment: During the first 'Thin Man' fight scene with the girls, there is an aerial shot of the Thin Man as he jumps in the air. The back harness of the wires is visible. (00:24:25)
Visible crew/equipment: When the Angels first get to the island after jumping off the "chads" boat, there is a shot of all the Angels' backs and they are wearing silver shiny backpacks and in the middle backpack, there is a reflection of a cameraman. (01:09:30)
Visible crew/equipment: When Alex and Dylan are climbing the fence to get into the caged area with Creepy Thin Man and Natalie, you can see that Alex is wearing elbow pads. (00:25:10)
Visible crew/equipment: Just at the start of the fight in the alley with the Creepy Thin Man and the Angels, he charges them and is booted into the air. As he comes back down, Dylan and Alex kick him, but watch above Creepy Thin Man when they do. It shows a mid-chest level view looking up at Thin Man of their kicks hitting his collarbone. You can see the entire exposed ceiling of the stage they're shooting the scene on. It's supposed to be an open night sky in the alley. (00:25:28)
Suggested correction: Knox wasn't a trained pilot. Either he had no clue to what was going on, or he thought something may have been wrong, but didn't know what to do about it.
Taking off and landing a helicopter are by far the most intense and difficult part of a pilot's training. Seriously, 99% of learning to fly is learning how to land and take off. If the pilot is skilled enough to take off in a Huey he is easily skilled enough to notice a massive additional drag on his helicopter due to the additional weight of the angels and the air resistance put up by such a bulky protrusion on his aircraft. If he isn't skilled enough to notice that, he isn't skilled enough to take off in the first place.