The position of Cassady's split lip changes from scene to scene.
Garcia's body armor is camouflaged in green shades, yet he was serving in Iraq, and all camouflage used in Iraq and other desert settings uses tan and brown shades.
When Kenny Ellis is holding a Glock handgun to his head, the trigger is clearly in the rearward position. Glocks cannot fire when the trigger is rearward, only when it is forward.