For EMS stands for Primary Area of Response, in other words if you were dispatched or respond to a call or hospital out of your area you have to then go back to your PAR unless reassigned and you stay at a post until dispatched to a call in that area. Common radio transmission" I am out of hospital XX returning to my PAR"
PAR - person arrest record every body knows that....PAR his golf game? no? never heard of it in my county- only means what that agency which uses it for means to them, its not universal, like the term "I'll give you a public service" not used in Jersey but everywhere else it means a telephone call
Moose is correct. It is used by the incident commander at an incident to maintain accountability of personnel on scene. Depending on the department and incident type they are usually conducted at specific times frames or when there is significant changes that happen, a collapse or as in going from and offensive mode(fighting the fire inside) to a defensive mode(evacuating the building and fighting it from the outside). Also depending on the department PAR can be done by the Incident commander, the Incident Safety Officer or dispatch. When a PAR is called it is the duty of the officer or senior member of the crew being called to check his personnel and to inform whoever is calling for PAR that they have PAR(all members of their crew accounted for) or that someone is missing or unaccounted for and where and what there last assignment was.