the medical chain described below. He has a yellow chasuble-like jacket with the inscription Directeur des Secours Médicaux. The medical chain The medical chain is organized in three parts. The personal attributed to each part are identified by a colour armband: red-white-blue. These are the colours of the French flag, and are also the symbol of: red: danger zone; white: medical zone; blue: secured zone (away from the disaster site). The scoop The scoop follows of the extraction/extrication operations. It the responsibility of a firefighter officer. The casualties are transported by a stretcher chain (noria) to the advanced medical post (field hospital). This officer has a red chasuble-like jacket with the inscription "", and the personal have a red armband. This part is also called "scoop noria" () or "small noria". The advanced medical post (AMP) The casualties are gathered at the advanced medical post (AMP, ), managed by a physician chosen by the director of medical rescue (DSM). He has to manage: the care to the casualties; the triage; to search for a destination (hospital) adapted to the different affections (medical regulation). He commands: a firefighter officer () chosen by the commander of rescue operations (COS): he deals with the organization and logistics of the PMA first responders, paramedical (nurses, ambulance men) and medical staff a secretaryship made of firefighters, who deal with: the establishment of the list of casualties; filling the identification forms (FMA: fiches médicales de l'avant); transmitting the list of casualties to the operational headquarters (PCO). In urban environments, the advanced medical post (PMA) is often placed in a public location (bar, restaurant, hall of sports...). In wilderness or on a road away from any building, it is an inflatable structure. The advanced medical post (PMA) is organized in three zones corresponding to the triage: Absolute emergency zone (): prehospital resuscitation unit for very serious cases: extreme emergencies () and grave injuries (U1); Relative emergency zone (): for the seriously (U2) and lightly injured (U3) Mortuary zone () for the deceased casualties. This zone is under the responsibility of the judicial police. Two additional zones can be created, besides the advanced medical (PMA) post but under the responsibility of the director of medical rescue (DSM): a gathering zone for non-injured people, managed by volunteer (non-professional, association) first aiders a zone for psychological support under the responsibility of physicians and psychiatrists, the MPEU (medical and psychological emergency