During an emergency, one of the instructions you may be given is
to shelter-in-place. This is a precaution aimed to keep you safe
while remaining indoors until an incident has been declared “all
clear” and it is safe to resume normal operations. Shelter-in-
place means selecting a small, interior room, with no or few
windows, and taking refuge there until you receive confirmation
that the situation is under control and you are no longer
required to shelter-in-place. The USP community may be
instructed to shelter-in-place due to an accidental release of
chemical, biological, or radiological contaminants, the
intentional release of chemical, biological, or radiological
contaminants due to a terrorist incident, a natural disaster, or
for personal protection because of a criminal incident. Normally
evacuation is the most common protective action taken when an
airborne hazard, such as smoke or noxious odor, is found in a
building. In most cases, existing plans for a general evacuation
are applicable for evacuation