This from Tim Olk:

Chicago Fire Department Working Fire Monroe West Of Hamlin Extreme Heat Puts Firefighters To Test

smoke from apartment building

Tim Olk photo

smoke from apartment building

Tim Olk photo

fire scene

Tim Olk photo

Firefighter on a  fire escape

Tim Olk photo

Tim Olk photo

Firefighter cools down on a hot day

Tim Olk photo

Firefighter cools down on a hot day

Tim Olk photo