Chicago FD units 464 & 466???

[SCPD]

Spent four GREAT days in downtown Chicago. Took in a Cubs game. Can anyone tell me who these units are? Heard them on Sun morning 4/30... My thought they are Fire Investigators or Inspectors

 

[werinshades]

Spent four GREAT days in downtown Chicago. Took in a Cubs game. Can anyone tell me who these units are? Heard them on Sun morning 4/30... My thought they are Fire Investigators or Inspectors

Yes, it's O.F.I. (Office of Fire Investigations).

 

[SCPD]

THANKS... Mr Shades