The purpose of the PS-Prep (Private Sector Preparedness) Program is to enhance nationwide resilience in an all-hazards environment by encouraging private sector preparedness. The program will provide a mechanism by which a private sector entity – a company, facility, not-for-profit corporation, hospital, stadium, university, etc. – may be certified by an accredited third party establishing that the private sector entity conforms to one or more preparedness standards adopted by DHS (the U.S. Department of Homeland Security).
http://www.fema.gov/media/fact_sheets/vpsp.shtm