You can hear it got a little tense early on.
Audio is released from San Francisco's four alarm fire earlier this week. It is a bit difficult to understand, but you can get the gist that something unexpected (i.e. ventilation induced fire behavior) had occured. Various reports from both fire and general media have called it a "backdraft", "smoke explosion" or "flashover".
SFGate Photos: Fireball just misses S.F. firefighters
Bill Carey is the daily news and blog manager for Elsevier Public Safety (FireRescue Magazine/Firefighter Nation, JEMS and LawOfficer sites.) Bill also manages the FireEMSBlogs.com network and is a former volunteer lieutenant with the Hyattsville Volunteer Fire Department in Prince George's County, Maryland.
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