At approximately 14:45 hrs on Sunday (6/28) afternoon, the South Chicago Heights Fire Department (IL) was toned out to the report of a fully-involved structure at 3210 East End Avenue. PD was reportedly on the scene confirming a working incident and the first arriving company immediately requested a MABAS Box. I arrived 30 minutes after the initial call. Departments on the scene included South Chicago Heights, Steger Estates, Steger, Park Forest, University Park, Chicago Heights, Crete, Matteson, Beecher, Richton Park, Flossmor, Homewood and Monee. There may have been more that I did not see. Box # was 7611 for the fire. There was also a HAZMAT Box 7699 for advisors only and a 2nd Alarm Investigator’s Box.