This from Dave Weaver:

4/13/92 Great Chicago Flood Mutual Aid Response

Fire departments from MABAS Division 13 in Kane County were requested along with many other MABAS divisions to respond with pumps to Chicago (MABAS Div. 9) to help control the Great Chicago Flood. The flood was caused by a bridge piling construction project that created a breach in an abandoned coal tunnel beneath the North Branch of the Chicago River. It was discovered the morning of Monday, April 13, 1992. Companies from departments including Batavia, Geneva, Elburn, Hampshire, Maple Park, and North Aurora, rallied at the Kane County Sheriff’s Office which was located in Geneva. The task force departed around 4:30 PM based on the time shown on the overhead light board at the I-88 York Rd. toll plaza. The convoy traveled to the staging area at the Chicago Fire Academy. I was a member of the Marywood FPD and shot this historic response to assist Chicago. Other than some precautionary EMS responses from the 1995 heat wave disaster, this was one of just a few manpower related mutual aid fire requests that Chicago has made in modern history.