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Fighters battle a multi-alarm fire at a four-story brownstone in the Back Bay neighborhood near the Charles River, Wednesday, March 26, 2014, in Boston. (AP Photo/Steven Senne) ( ADDITION Boston Brownstone Fire )

Firefighters look on at the scene of a multi-alarm fire at a four-story brownstone in the Back Bay neighborhood near the Charles River, Wednesday, March 26, 2014, in Boston. (AP Photo/Steven Senne) ( ADDITION Boston Brownstone Fire )

Fighters battle a multi-alarm fire at a four-story brownstone in the Back Bay neighborhood near the Charles River, Wednesday, March 26, 2014, in Boston. (AP Photo/Steven Senne) ( ADDITION Boston Brownstone Fire )

Firefighters scream for an ambulance as they work on and rush an injured firefighter on a stretcher down Beacon Street, Wednesday, March 26, 2014, in Boston. Firefighters responded to a four-story brownstone fire. A Boston city councilor said two firefighters have died in the fire. (AP Photo/The Boston Globe, Jim Davis) ( APTOPIX Boston Brownstone Fire )

A firefighter places his hand on the shoulder of another at the scene of a multi-alarm fire at a four-story brownstone in the Back Bay neighborhood near the Charles River, Wednesday, March 26, 2014 in Boston. (AP Photo/Steven Senne) ( ADDITION Boston Brownstone Fire )

A firefighter looks on at the scene of a multi-alarm fire at a four-story brownstone in the Back Bay neighborhood near the Charles River, Wednesday, March 26, 2014, in Boston. (AP Photo/Steven Senne) ( ADDITION Boston Brownstone Fire )

A multi-alarm blaze at a structure is seen from Cambridge, Mass., as firefighters respond, Wednesday, March 26, 2014. (AP Photo/The Boston Globe, Essdras M Suarez) ( Boston Brownstone Fire )

A firefighter, right, lowers his head at the scene of a multi-alarm fire at a four-story brownstone in the Back Bay neighborhood near the Charles River, Wednesday, March 26, 2014, in Boston. (AP Photo/Steven Senne) ( ADDITION Boston Brownstone Fire )

A baseball cap with a written tribute to fallen Boston firefighter Michael Kennedy rests at a makeshift memorial in front of fire station Engine 33, Thursday, March 27, 2014, in Boston. Fire station Engine 33 was the station of fallen firefighters Kennedy and Lt. Edward Walsh and who lost their lives fighting a 9-alarm fire in a four-story brownstone in Boston's Back Bay neighborhood Wednesday, March 26, 2014. (AP Photo/Steven Senne) ( Boston Brownstone Fire )

Somerville, Mass. firefighter Earl Johnson kneels to pray in front of a makeshift memorial on the front of fire station Engine 33, Thursday, March 27, 2014, in Boston. Fire station Engine 33 was the station of fallen firefighters Lt. Edward J. Walsh and Michael R. Kennedy who lost their lives fighting a 9-alarm fire in a four-story brownstone in Boston's Back Bay neighborhood Wednesday, March 26, 2014. (AP Photo/Steven Senne) ( Boston Brownstone Fire )

In this photo made Wednesday night, March 26, 2014, firefighters salute the medical examiner's truck carrying the body of one of two firefighters killed when a fire driven by strong winds whipped through a four-story apartment building in Boston and trapped them in the basement. (AP Photo/Boston Herald, Matt West) ( Boston Brownstone Fire )

Emergency medical technician David Stewart places flowers at a makeshift memorial on the front of fire station Engine 33/Ladder 15, Thursday, March 27, 2014, in Boston. Engine 33/Ladder 15 was the station of fallen firefighters Lt. Edward Walsh and Michael Kennedy, who lost their lives fighting a nine-alarm blaze in a four-story brownstone in Boston's Back Bay neighborhood Wednesday, March 26, 2014. (AP Photo/Steven Senne) ( Boston Brownstone Fire )

Somerville, Mass. firefighter Earl Johnson places flowers at a makeshift memorial on the front of fire station Engine 33, Thursday, March 27, 2014, in Boston. Fire station Engine 33 was the station of fallen firefighters Lt. Edward J. Walsh and Michael R. Kennedy who lost their lives fighting a 9-alarm fire in a four-story brownstone in Boston's Back Bay neighborhood Wednesday, March 26, 2014. (AP Photo/Steven Senne) ( Boston Brownstone Fire )

Firefighters place black bunting on the front of fire station Engine 33/Ladder 15, Thursday, March 27, 2014, in Boston. Engine 33/Ladder 15 was the station of fallen firefighters Lt. Edward Walsh and Michael Kennedy who lost their lives fighting a nine-alarm blaze in a four-story brownstone in Boston's Back Bay neighborhood Wednesday, March 26, 2014. Thirteen other firefighters were injured in the blaze and several police officers also were taken to hospitals. Some residents were rescued from the upper floors of the four-story apartment building, but none was hurt, officials said. (AP Photo/Steven Senne) ( APTOPIX Boston Brownstone Fire )