Cordon established around the vicinity of an incident, and encompassing the inner cordon, to control access to a wider area around the scene, to allow the emergency services and other agencies to work unhindered and in privacy
Cabinet Office, Civil Protection Lexicon: A developing single point of reference for UK Civil Protection terminology, Version 1.0, UK 2009. http://webarchive.nationalarchives.gov.uk/+/http:/ /www.cabinetoffice.gov.uk/media/230446/lexicon.pdf , (Emr Mgt - Brit) {19}