EMS Field Operations consists of seven transport units operated from seven substations around the parish (county). These seven units are the primary response units that operate twenty-four hours a day. Two power units operate during peak call hours for 12 hour shifts to help with the call volume. EMS units are staffed with a minimum of two EMT-Paramedics who work rotating twelve hour shifts. Primary units have shift change at 7:00 am and 7:00 PM. The power shifts work non-rotation shifts that are set at 10:00am to 10:00pm and 12:00pm to 12:00am. Crews on the primary units are rotated through each station in the parish and switch between day and night shifts every month.

There is a Field Supervisor and an Assistant Supervisor assigned to each shift. The Supervisors are responsible for all daily operations of the shift and work twelve hour shifts. The Supervisors are part of the administrative staff and are also available to respond to calls in ALS equipped suburbans.