Please note: NFPA 1660 is in a custom cycle due to the Emergency Response and Responder Safety Document Consolidation Plan (consolidation plan) as approved by the NFPA Standards Council. As part of the consolidation plan, NFPA 1660 (combining Standards NFPA 1600, NFPA 1616, and NFPA 1620) is open for public input with a closing date of November 13, 2020.