Light

The facility Power Breakers are very important, as they control the lights. If the Chaos Insurgency shoots all of the Power Breakers, the room will immediately go dark and everything in it will be bathed in darkness. It's very, very, VERY dark without the Breakers, so try to make sure they are fully repaired at all times.

A good strategy for the Chaos Insurgency is to split up around the facility, and shoot out the Breakers. This insures that the facility personnel cannot see the CI very well, as their uniforms are black. Turning off the lights also makes sure that the open vents won't be seen either.

Technical personnel need to avoid the Chaos Insurgency while repairing the lights, as Technical has no weapons and is extremely vulnerable.