AI Diamond Security Guard seems really stupid in other games they are more cautious if someone is coming up to them with a weapon such as a spiked baseball bat and they should program the ai to be more preventative and ask you to holster your weapon on your approach and AI security guard should raise his weapon and match your threat or something at least as the player gets within a metre and he shows no reaction come on, this games seems to not of improved over fallout 3 at all in ai mechanics.