I don't advise standing to the side, rear, or very close to a 2K22 Tunguska series self-propelled anti-aircraft gun and missile system (SPAAGM). Do a video search for "2K22 Tunguska" and watch those cases and flames spew out!The empties tend to come out of the guns in a certain direction. If you know which way, you can stand in a different location.
Oh yeah those little blighters too! You don't want to be close to them when they go off. At least for the Tunguska its ammo (like most cannon ammo) isn't prone to on-mass explosions. However if it's missiles are hit, well that results in a rather different and more violent event.Plus the added danger of enemy drones.
Hopefully you found a few of interest? I got to see one at bit more intimately, it was quite impressive. I certainly wouldn't want to be on the receiving end of its guns, let alone its missiles.I took your advice and watched some of the videos on the Tunguska, and all of them said it had 30mm guns because the 23mm ones weren't powerful enough to down an A10.