In the Breaking Point Modification of Arma 3, the AI Zombies push players outside of the large Military towers through walls and stairs, typically this is avoidable, however if the AI entity chooses to walk a certain path and collide with a player near a wall, the player will phase through the building structure and fall to their death. This also happens if a player goes prone while on top of several structures with little room to lay down (without the aid of AI).