On Thursday, crews were still on the scene putting out hot spots on Beacon Street after a 9 alarm fire killed two firefighters Wednesday.
A makeshift memorial has popped up outside Engine 33 on Boylston Street as Boston mourns this tragic loss.
The cause of the fire is still under investigation.
Gov. Deval Patrick and members of the fire department held a press conference in Boston late Thursday morning.
Firefighters stood in silence, heads bowed, honoring the lives of two men killed in the line of duty Wednesday.
"It's a sad day for us and the city of Boston, our hearts go out to the families our thoughts and prayers are with them," said Boston Fire Commissioner John Hasson.
Ed Walsh, 43, and Michael Kennedy, 33, quickly became trapped and never made it out of the Back Bay fire on Beacon Street Wednesday afternoon about 2:45 p.m.
"In 30 years I've never seen a fire travel that fast, escalate that quickly, and create such havoc in a short period of time," said Deputy Chief Joe Finn.
The 9-alarm fire started in the basement of the brownstone and quickly got out of control. Everyone living inside got out safely, 13 other firefighters were injured in the blaze.
"It makes me proud to be mayor of the city of Boston after watching the way the men and women of the Boston Fire department worked today," said Mayor Marty Walsh.
It took 150 firefighters, with 25 trucks, several hours to extinguish the fire. It took two brave men sacrificing their lives, to keep Boston's citizens, safe.
Richard Paris of the Boston firefighters union said, "That's what we do; sacrifice our lives for the citizens of Boston,"
Funeral arrangements have yet to be made.
When they are, the Providence fire chief said he'll be sending men and women to Boston to honor Michael Kennedy and Lt. Ed Walsh.