It's not bad for Norwalk to get to Vista, as all they have to do is shoot up Route 123 to get into Vista. As long as a Vista ambulance has already rolled, the Vista ambulance can usually intercept with a Norwalk medic along route 123 in New Canaan. Now, if you're using Norwalk's medic as a transport unit, requiring them to actually get on scene, that may take a bit more time. However, Norwalk's response times are great and they tend to get into or near Vista within a few minutes. As for Wilton's medic, they wouldn't likely be called, as they have to cover Wilton, Weston, and parts of Georgetown and Redding. New Canaan's medic has been called before to respond into Vista, and Norwalk will then bring an ambulance to the New Canaan line or into New Canaan to backup their town. Wilton and Weston Medics are Norwalk Hospital Paramedics operating in town-owned flycars. At the end of the day, if Vista needs help and New Canaan and/or Norwalk are available, they are guaranteed to be merely minutes away. Norwalk has 24/7 ALS units and New Canaan has a 24/7 medic and at least one BLS ambulance (often more) fully staffed by volunteers in-house at all times.