Before revision: Typical alarm levels + Alarm levels used in the response policy of the New York City Fire Department (FDNY) Units assigned 1st alarm fire / box alarm 1st alarm fire/ "all hands" box alarm 2nd alarm fire 3rd alarm fire 4th alarm fire 5th alarm fire Engine companies 3 4 8 12 16 21 Ladder companies 2 3 (one operating as FAST) 5 7 9 11 Battalion Chiefs 1 2 (one as FAST) 5 6 6 6 Squad companies 1 1 1 1 1 Rescue companies 1 1 1 1 1 Deputy Chief 1 1 1 1 1 RAC unit 1 1 1 1 Satellite units 1 1 1 1 Safety Battalion Chief 1 1 1 1 SOC Battalion Chief 1 1 1 1 Tactical Support Unit 1 1 1 1 Field Communications Unit 1 1 1 1 Field Communications Battalion Chief 1 1 1 1 Communications Unit 1 1 1 1 Mask Service Unit 1 1 1 Air Recon Chief 1 1 1 Mobile Command Unit 1 1 Planning Section Chief 1 1 The list is a basic example of how alarm levels are categorized in a fire department, how many fire apparatus or fire units respond to each alarm level, etc.
After revision: Typical alarm levels + Alarm levels used in the response policy of the New York City Fire Department (FDNY) Units assigned 1st alarm fire / box alarm 1st alarm fire/ "all hands" box alarm 2nd alarm fire 3rd alarm fire 4th alarm fire 5th alarm fire Engine companies 3 4 8 12 16 21 Ladder companies 2 3 (one operating as FAST) 5 7 9 11 Battalion Chiefs 1 2 (one as FAST) 5 6 Squad companies 1 Rescue companies 1 Deputy Chief 1 RAC unit 1 Satellite units 1 Safety Battalion Chief 1 SOC Battalion Chief 1 Tactical Support Unit 1 Field Communications Unit 1 Field Communications Battalion Chief 1 Communications Unit 1 Mask Service Unit 1 Air Recon Chief Mobile Command Unit 1 Planning Section Chief 1 1 The list is a basic example of how alarm levels are categorized in a fire department, how many fire apparatus or fire units respond to each alarm level, etc.