This from Tim Olk:

Live-fire training in Flossmoor

firemen burn house for training

Tim Olk photo

firemen burn house for training

Tim Olk photo

house fully-engulfed in fire

Tim Olk photo

house fully-engulfed in fire

Tim Olk photo

house fully-engulfed in fire

Tim Olk photo

click the link for  short video segment IMG_8745