same unit operating out of the station. For instance if both "Medic 104" and "Medic 104 Bravo" are in service The Echo "E" identifier is used whenever volunteers have placed an ambulance in service. For instance, "Ambulance 106 Echo". The Medic "M" suffix on a suppression unit indicates it has ALS staffing Rescue 101 on order Other Fire Departments in the Arlington County System Arlington County Fire Department is the primary all-hazards response agency for Arlington County, Virginia. In addition to ACFD, other fire departments operate and provide emergency and support services to Arlington County. Prior to 1950, independent volunteer fire companies protected Arlington County. As the demand for services for fire and EMS grew, the need for full-time paid staff was acknowledged by the County. Staff was hired, first to augment the volunteers, then finally to provide the full range of services required in a modern, urban, fire department. The volunteer members ride as supplemental staffing on apparatus and do not count as minimum staffing. The Arlington County Fire Department uses the volunteer apparatus for staffing during peak call volume times and for providing support services, such as special event stand-bys, storm and natural disaster staffing, and scene lighting, air replenishment and canteen services for long duration incidents. Bomb Squad The Arlington County bomb squad is jointly operated by the ACFD and the Arlington County Police Department. While the bomb disposal rigs are staffed by the fire department, and stored at Fire Station 3, the Bomb Squad works with the ACPD explosive canine teams on explosive related incidents. The squad is classified as a Type 2 squad on FEMA's three-level classification system. This classification denotes that the bomb squad has the following equipment available: 2 or more response teams Full coverage bomb suits Portable x-ray devices Employ explosive tools to conduct specific or general disruption Demolition Kit PPE for chemical and biological devices A Bomb disposal robot capable of handling non-vehicle IEDs Explosives reference library September 11 and the Pentagon The Arlington County Fire Department was the lead agency in the response to the Pentagon attack. ACFD Assistant Chief James Schwartz implemented an incident command system (ICS) to coordinate response efforts among multiple agencies. It took about an hour for the ICS structure to become fully operational. Firefighters from Fort Myer and Reagan National Airport arrived within minutes. As a result of the attack on the Pentagon, additional career