1) DC Comics cosmic entity 2) Hall pass checkers 3) Keeps track of 4) Proctors 5) Screens in a computer lab 6) Security office array 1) Keeps an eye on 2) Reptiles 
The speakers facing back onto the stage and the system or amps, equalizers, and effects attached to them.
This term is given to those assigned and identified as lead participants in an emergency evacuation plan.