Backdraft Explosion Killed Boston Firefighters

Officials said the fire may have been smoldering for at least an hour before workers and customers evacuated.

Scanlon left a flag. Bouquets and cards were also left outside the building.

"It feels like you've lost somebody right in your family, that's what it feels like," nurse Amy White said. She said her father and brother were both firefighters.

"Always in the house was a fire radio. And they take care of us, so we want to take care of them," she said.

Andrea Tapp came to say thank you.

"They're very brave people," she said. "I mean, I wouldn't do it. Would you?"

Boston's Roman Catholic Cardinal Sean O'Malley offered condolences saying, "At this terribly sad moment we pray for Paul and Warren, their families and friends, the more than 100 firefighters who responded at the fire, and all the men and women of the Boston Fire Department. We pray for those injured last night and ask God to bless them with the strength to recover."

Massachusetts Gov. Deval Patrick ordered flags around the state lowered until after the firefighters funerals. Firefighters from Boston's Brighton neighborhood covered the Centre Street station for their fallen colleagues, spending part of the day draping black bunting around the building.

Cahill and Payne were the first two Boston firefighters to die in the line of duty since 1994.

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