The purpose of this LSU NCBRT presentation is to provide tactically sound techniques for law enforcement to use when negotiating an open door during an active shooter incident. When responders determine that they will enter a room, they must quickly and decisively take steps to pass through the door or threshold and be prepared to handle any problem. Properly negotiating a door prior to making entry sets officers up for success by identifying specific tasks to be performed and limiting their exposure to potential threats prior to making entry.