 This allows any person to identify the type of unit, and its department of origin based on the unit identifier.For example, Engine 88 is a fire engine (apparatus type) and is from station 88, which belongs to Fort Lauderdale.If a station has more than one of the same type of apparatus responding from it, such as two rescues from one station, or two engines from one station, the apparatus type remains the same, but the number 2 precedes the station number.