Due to the obviously impending zombie apocalypse, I have supplemented my substantial Y2K cache with the following life preserving equipment.
Hasbro Glow Worm, common batteries,warm tint, and sub lumen.
The often forgotten shark suit. It could really save your 6 from deadly bites.
My only experience with zombies is from watching the walking dead.
And as nightshade suggested, I am a little surprised that they aren't wearing riot suit protection for at least their arms and hands.
Maybe a quad-copter with collision avoidance, and lights and camera would be a good tool for clearing a room, house, and or jail. One could fly it off into a corner of the room, and after the zombies go for it, they can be attacked from behind.