Shelter in Place.  Unfortunately, most have never heard of sheltering in place.  It means staying inside your dwelling to avoid either a security risk such as a criminal loose in your area, or a airborne substance that can be harmful to you and your family.  The command to shelter in place will most likely be announced by health and safety personnel through media sources. You can also make that decision if you become aware of a developing situation.  If you see police searching in your neighborhood, stay inside and lock the doors / windows / etc.  If you see unusual signs such as birds falling from the sky, smell strong chemical odors, or see people becoming rapidly ill, don't wait initiate the response procedure below.  This example is for an airborne agent that is Chemical / Biological / Radiological / or Explosive:   AKA "CBRE".

 ​​Emergency Preparedness for Families and Neighborhoods

SHELTER IN PLACE  ( SIP )

Ready Foothills

Shelter in Place kit in and around orange bucket

First move all family members, SIP kit, and pets into the designated room in your dwelling.  (NOTE: this also applies to places of work and other buildings) Close all doors and windows and turn off any ventilation systems.  The room should have a minimum number of outside windows and be on a second story if possible.  Use plastic sheets and gaffers tape to seal all windows, doors, electrical outlets, and vents.  Close the curtains if there is a possibility of explosions.  This will limit flying glass.  If there is an explosion, reseal torn plastic sheets immediately.  Cutting and labeling the plastic sheets in advance saves precious time.  Anywhere outside air may seep in to the room, cover it!  You could be sheltering in place for many hours so consider the size of the room and available air.  Your SIP kit should include food, water, games, portable radio, and sanitation supplies.  Wait for the "All Clear" announcement over media sources before going outside.