From the Fire Service, Inc. Facebook page: This unit recived the following upgrades, all in house at Fire Service Inc. New: LED Warning Lights, Complete new Paint and lettering, New ROM roll up doors, New DOT LED lights, Rebuilt engine, suspension, brakes, air system, electrical system (including all new electrical boards) upholstery, cab door panels, A/C systems, Generators and the entire body structure and under carriage support system. Thank you to the City of Chicago ! Fire Service, Inc. photo Fire Service, Inc. photo Fire Service, Inc. photo Fire Service, Inc. photo Fire Service, Inc. photo Fire Service, Inc. photo More photos HERE Gb5099-94 Gas Cylinders,Steel Cylinders,Steel Gas Cylinders,Seamless Steel Cylinders CBM TECHNOLOGIES (NINGBO) CO.,LTD , https://www.sinogascylinders.com