A whole week featuring the wonders of Night Vision Goggles (NVG), or Night Observation Devices (NODs), Starlight scopes, etc. Light enhancement technology is an awesome force multiplier for the zombie hunter. Generally it comes in two forms; Active: which emits infrared light and converts it back to visible light, and Passive: which enhances ambient light on a screen for viewing. Both have their strengths and weaknesses in our profession. For zombie work, either works fine. But some beasties can see infrared light and using Active NVG only advertises your presence -- but at least you'll be able to see your threat as it charges.