The Oak Park (IL) Fire Department responded to a commercial garage for a fire and structural collapse on Tuesday afternoon (11-11-14) after a propane tank being removed from a truck exploded. The alarm was upgraded upon arrival to a 3rd alarm in addition to an EMS Box Alarm for worker injuries. The images below are from several sources.
Here are some photos of the Oak Park (IL) 3-Alarm/2nd alarm EMS box on 11-11-14.
For more check here: http://codephotography.smugmug.com/Scenes/Oak-Park/311-Alarm/i-2MGjTJm