Multiple-alarm Fire - Typical Alarm Levels

Typical Alarm Levels

Below is a list of the alarm levels used in the response policy of the New York City Fire Department, in New York City, New York, United States. This is a basic example of how alarm levels are categorized in a fire department, how many fire apparatuses respond to each alarm level, etc. In New York, however, additional special alarm levels are utilized, aside from the conventional 1st Alarm, 2nd Alarm, 3rd Alarm, etc. Examples of such alarm levels are the Signal 10-75 Assignment, the Signals 10-76 and 10-77 Assignments, and the Signal 10-60 Assignment. A 10-75 is a Working Fire (i.e., there is fire visible from a building), the 10-76/10-77 Assignments are the alarm levels separate from the 1st, 2nd, 3rd Alarms, etc. that are the standard fire department responses to fires in high-rise buildings. The Signal 10-60 is a separate response to major disasters. Below is how the alarm levels are categorized in order per protocol and each apparatus count in an addition per alarm.

• Box Alarm/1st Alarm Assignment:
  • 3 Engine Companies
  • 2 Ladder Companies
  • 1 Battalion Chief
• 10-75 (Working Fire) Assignment (Additional Units):
  • 1 Engine Company
  • 1 Ladder Company (operating as Firefighter Assist and Search Team)
  • 1 Squad Company
  • 1 Rescue Company
  • 1 Battalion Chief
  • 1 Division Chief
• 2nd Alarm Assignment:
  • 5 Engine Companies
  • 2 Ladder Companies
  • 2 Battalion Chiefs (1 operating as the Incident Safety Officer Chief and 1 operating as the Resource Unit Leader Chief)
  • Rescue Battalion Chief
  • Safety Battalion Chief
  • 1 Satellite Unit (Special Unit)
  • 1 Recuperation and Care (R.A.C.) Unit (Special Unit)
  • 1 Tactical Support Unit (T.S.U.) (Special Unit)
  • 1 Field Communications Unit(Incident Command Vehicle)
• 3rd Alarm Assignment:
  • 4 Engine Companies
  • 2 Ladder Companies
  • 3 Battalion Chiefs (1 operating as the Staging Chief and 1 operating as the Air Recon. Chief)
  • 1 Deputy Chief
  • 1 Mask Service Unit (M.S.U.) (Special Unit)
• 4th Alarm Assignment:
  • 4 Engine Companies
  • 2 Ladder Companies
  • 1 Battalion Chief (operating as the Incident Planning Chief)
• 5th Alarm Assignment:
  • 4 Engine Companies
  • 2 Ladder Companies
  • 1 Assistant Chief (Usually the Borough Commander)
  • Chief of Operations

If the incident commander decides that the incident does not require a higher alarm level to be requested, they can specially request an additional unit to the scene without requesting a full alarm level assignment. For example, at a Working Fire, there are 4 Engine Companies, 3 Truck Companies, 1 Squad Company, 1 Rescue Company, 2 Battalion Chiefs, and 1 Division Chief operating at the scene. If the fire is not large enough to require a 2nd Alarm, but a need for more equipment and manpower is needed, the commanding Chief can request additional units to respond "Specially Called" to the scene.

Thus, at the scene of a 5th Alarm Fire in New York, there are a total of 21 Engine Companies, 11 Ladder Companies, 1 Squad Company, 1 Rescue Company, 9 Battalion Chiefs, 1 Division Chief, 1 Deputy Chief, 1 Assistant Chief, and the Chief of Operations, as well as multiple specialized units and or specially called units operating on the scene.

All of these companies come from many firehouses to the scene. Some companies, however, are quartered together at the same firehouses. So, it is not a matter of how many firehouses respond to a fire, as popularly believed, but rather, how many companies/units and how many firefighters are operating on scene.