According to the National Fire Protection Association, the standard has been revised. See: NFPA 1600: Standard on Disaster/Emergency Management and Business Continuity/Continuity of Operations Programs. Note that the document can be browsed on line but there is a fee for a downloadable copy.
The National Commission on Terrorist Attacks Upon the United States (the 9/11 Commission), recognized NFPA 1600 as our National Preparedness Standard. Widely used by public, not-for-profit, nongovernmental, and private entities on a local, regional, national, international and global basis, NFPA 1600 has been adopted by the U.S. Department of Homeland Security as a voluntary consensus standard for emergency preparedness.