Abstract: On January 9, 2011, Employee #1, Fire Captain and three other firefighters of LA City Fire Station, arrived on scene with Engine #1, where a 2000 Chevy Impala was fully engulfed in a fire. The dashboard and the steering column areas of the vehicle had water reactive combustible metals (possibly magnesium). Employee # 1 applied a stream of water to the dashboard of the vehicle in attempt to extinguish a flare up on the driver side compartment. An explosive reaction occurred, accompanied with a loud boom sound, Employee # 1 was thrown back and fell on his head from the impact of the explosion. Employee # 1 was transported to LAC and USC Medical Center for treatment of a parafalcine subdural hematoma, traumatic subarachnoid hemorrhage, and parietal skull fracture (internal head injuries).