The I.M.F. team uses holograms, which is a technology that still isn't possible as of 2020.
During the exterior fight scene in this episode, the camera does a whip pan and lands on a shot where you can see the entirety of the camera unit on a dolly filling the entire frame.
Mr. Phelps demonstrates a MAC-10 submachine gun on a bombed out bus. The bus should have been towed away by the authorities instead of simply being left in a field.