as randy gillen thal explain, investigatorings think that smoke detectors could have saved some of theives. >>> in the span of 12 hours, firefighters in north town and philadelphia battled three separate braces leaving six people dead and officials say it's possible all could have been prevented. two adults and a child were killed, trapped when their home erupted in flames. and in south philly, firefighters say smoke detectors had no working batteries when two adults here were killed. the third deadly fire happened this morning in west philly. witnesses saw people jumping from the burning home. >> the guy hanging on the second floor landing, he jumped and we seen the whole first floor engulfed in flames. >> one man was killed when he tried to put the fire out himself but got caught up in the heavy smoke. >> he was trying to put it out and get people out of the building. >> a difficult 12 hours for local firefighters and now a much needed message from philadelphia's fire commissioner. >> fire is everyone's fight. we need everyone to have a working smoke alarm, have a home escape plan. m