Aim 3: Position ambulances where there are clusters of delayed ambulance calls for high acuity patients to improve response times. Over a six-month period, ambulances will be repositioned in and around clusters of delays to improve response times. This period will be compared with the same calendar period in the previous year using a logistic regression analysis to determine if there is a decrease in delayed ambulance responses. Spatial analyses will also be performed on data from the intervention period to assess for the presence of clusters of delays.