This document contains planning considerations that emergency medical services (EMS) medical directors, EMS systems planners, and hospital emergency planners should review when developing mass casualty incident plans and training programs. The focus of this paper is specifically designed to educate emergency planners on the key distinctions of no-notice, dynamic incident scenes with exceedingly large numbers of patients.
https://files.asprtracie.hhs.gov/documents/aspr-tracie-mass-casualty-triage-final-508.pdf