I'm from Madison but now retired in Florida. I frequently listen to the RR audio feed for Dane County Sheriff and EMS. When EMS is dispatched the call is assigned a response level. I have heard Alpha through Echo. My question is this: What is the meaning of these response levels. For example is an Alpha response calling for more urgency than a Delta respsonse or is the Delta more urgent? Are there other responses other than A-E? I have only heard these 5. Thank you for your responses.