A Lock Down is a procedure used when there is an immediate threat to the building occupants. Students, faculty and staff would be instructed to secure themselves in the room they are in.
A Lockdown is a procedure used when there is an immediate threat to the building occupants. In the event of a Lockdown, students, faculty and staff would be instructed to secure themselves in the room they are in and not to leave until the situation has been curtailed. This allows emergency responders to secure the students and staff in place, address the immediate threat and remove any innocent bystanders from immediate danger to an area of safe refuge.
If faced with an active shooter incident, there are THREE things you can do that make a difference. RUN, HIDE, FIGHT.