 We're using predictive analytics. Fire Chief Tiffany Green says they know when crews are busier. We're putting peak units in certain areas. We're putting a peak unit in Greenbelt, for example, because we know during a certain time call, there's going to be more EMS calls, and we want to have an EMS unit available to run those calls. John Dome in WTOP News. Now, Prince George's county officials say they are currently operating with 251 firefighters short of a full staff. County also plans to hire 150 new firefighters in 2025 as part of its staffing reallocation plan.