I've noticed during police raids the Guard AI is simply awful, For one they don't rush to meet the attackers, just wandering around when a raid starts, until something gets broken.
I've also noticed they're pretty hit and miss when fighting, my first guard has a samurai sword and butchered a wave or two, then when another attack came killed one and then ran away as the other shot him dead, despite being close to the enemy than far.
Today was a real breaking point, i had a 3 man raid vs 2 guards and a few bear traps. The first guard, armed with a revolver, torch and helmet, stood there and got shot in the back, the second in full samurai gear with a space sword, rushed in, killed 2 cops, then froze up as the third stood, within melee range, and shot him to death.

The AI needs some work, A "call guards here" button would be great, Along with them responding to a raid, which the police chief casually tells me, before the cops murder several workers.

Beyond that does anyone have any good tips for using guards? What do i want to equip them with? Is a torch better than armour? Should i assign them to the entry room with the room-tool?