An investigation by federal officials says a series of factors led to the deaths of two San Francisco firefighters who were killed while battling a house fire last year.
The June 2 fire in the four-story home claimed the lives of Lt. Vincent Perez and firefighter-paramedic Anthony Valerio.
Officials say the 48-year-old Perez and the 53-year-old Valerio died when they became trapped in the home and were overwhelmed by intense heat.
A report released Friday by the National Institute of Occupational Safety and Health says the unusual design of the hillside home, as well as what the report termed "ineffective fire command communications and progress reporting" contributed to the death of the firefighters.
The report also made 25 recommendations, including instituting standard procedures for battling fires in hillside homes.
Fire Department spokesman Capt. Ken Lombardi told the San Francisco Chronicle the department has implemented about 18 of those recommendations.
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