Office of the First Deputy Fire Commissioner

First Deputy Fire Commissioners;

 * First Deputy Fire Commissioner - ____??____ (S1 - S2)
 * First Deputy Fire Commissioner - ____??____ (S3 - S4)
 * First Deputy Fire Commissioner - ____??____ (S5 - S6)
 * First Deputy Fire Commissioner - ____??____ (S7 - S8)
 * First Deputy Fire Commissioner - Gloria Hill, (S9 - S10) - (S9 E10 + E12 + E15, S10 E1)

Bureau's

 * Bureau of Administration Services
 * Bureau of Fire Prevention
 * Bureau of Operations
 * Bureau of Logistics

Office's

 * Office of the Medical Administration and Regulatory Compliance
 * Office of the Chief of Safety
 * Office of Special Projects
 * Office of Internal Affairs:
 * Lieutenant - Ted Griffin, (Chicago Fire S1 E10)
 * Office of Commissary
 * Office of Manpower