If you sit in a maverick helicopter, then when you hold Backspace, people appear on it and will protect your helicopter, to reset them, press Backspace and so on as much as you want.
Cedar 91 to replace the old tec9 will bring a particle of the Russian soul into the American atmosphere, although CJ obviously doesn't care what barrels to wet the cops and passers-by, even as it is a pity for them already :)