Crotega was formed as a result of an educator’s vision. The national tragedies of Sandy Hook and other school shootings impelled Jody Allen Crowe to find a solution to active shooter situations. He brought together experts from several fields to research and develop an innovative structural change to buildings that will have a lasting impact on the interior control of buildings. The concept of a building intruder defensive shield is a first-of-its-kind system for protecting building occupants. SentriZone™ has the potential to change building infrastructures in the same manner fire sprinklers did for fire control.