Retired Minooka firefighter Rick Van Asdlen (left) inspects the gear of a Westmont firefighter before he enters the Flashover Simulator, during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Dan Cromp Jr. of the Braidwood Fire Department inspects the gear of a Newark firefighter before being allowed to enter the Flashover Simulator, during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Retired Minooka firefighter Rick Van Asdlen talks about the Flashover Simulator and how flammable gasses give off different colors of smoke and how firefighters can recognize them, during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012.| Ray Luna~For Sun-Times Media

The fuel used to cause a flashover situation (right) in the Flashover Simulator, during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012.| Ray Luna~For Sun-Times Media

A door on the Flashover Simulator is opened to allow more oxygen in and increase the burn, during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Firefighters in the Flashover Simulator get ready, as the fuel used to cause a flashover situation (top) is lit, during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Firefighters exit the Flashover Simulator, during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Firefighters learn more about flashover as plywood burns in the Flashover Simulator during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Firefighters from Glenside practice extrication techniques, during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Firefighters from Glenside and East Joliet practice extrication techniques during the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Plainfield Deputy Chief Jon Starton speaks as the Chief Shabbona annual Pow Wow Fire School honors Morris Fire Chief Robert Coleman (left) and retired Coal City Fire Chief Harold Holsinger (center) at the Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012 .| Ray Luna~For Sun-Times Media

Firefighters learn Airbaging in the Class 3-Heavy Auto Extrication class during the Chief Shabbona annual Pow Wow Fire School at Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Firefighters from Rockdale learn about vehicle stabilization jacks during the Chief Shabbona annual Pow Wow Fire School at Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Firefighters learn Airbaging in the Class 3-Heavy Auto Extrication class during the Chief Shabbona annual Pow Wow Fire School at Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media

Firefighters learn about vehicle stabilization jacks during the Chief Shabbona annual Pow Wow Fire School at Exelon Midwest Fire Training Academy in Morris, Sunday May 6, 2012. | Ray Luna~For Sun-Times Media