This from Eric Haak:
Just before 1830 hrs on Tuesday evening (7/22), the chief of Chicago’s 22nd Battalion pulled up on the scene of a working fire in an occupied 1.5-story frame residence. The fire appeared to have started in the rear portion of the attic and quickly consumed much of the attic space. With a three-story, ordinary, apartment building with wood frame porches as the sector D exposure, and a heat index near 100, the 22nd requested a Still & Box Alarm within minutes of arrival. Heavy fire vented out the sector B dormer and through the roof above, but within a few minutes, the fire darkened down and was brought under control. The truck seen in the images is 27. This was the second evening in the last three that Engines 75 and 62 had a working fire in their still district.