Historically, our department has established command on ALL calls - long before NIMS. We've had a few mgmt changes and there are some who do not believe we need to do that on EMS calls anymore, so they've stopped. I need to know if there is anything (other than NIMS) that specifically states command should be established on ALL calls including EMS. I don't have a policy to pull from (long story, past chief). Our dept does not provide transport, so we do work with another agency that provides transport. Curious to know how others handle command on EMS response.