''The impact broke the harness (of the air tank),'' said Assistant Chief John Neal. ''We think that absorbed a lot of the shock. It distributed the impact throughout his body, like a seatbelt. Even the doctor said that's probably what saved him.''
Lt. Ware, a firefighter for nine years, was in critical condition late Saturday in the burns unit at University Hospital. He has a fractured arm and second- and third-degree burns on his head, face and neck. Doctors think he has internal injuries, as well as fractures in his spine.
Officials had no damage estimate Saturday but said the building was salvageable. The fire was contained to Ms. Gray's two-story unit. Other units were damaged by smoke and water.
Investigators say the fire began in the kitchen of the Grays' apartment.
Capt. Lacey Calloway, commander of the fire investigation unit, said an unattended stove - a front burner was left on high - caused the fire.
The layout of the apartment, which Chief Auffart called ''peculiar,'' made the fire tricky to battle.
From the outside, it appeared as if all apartments in the brick building were on one story, each accessed from a central hallway and stairwell, he said.
But the Grays' apartment is on two floors: the kitchen and living room are downstairs on the third floor, and the bedrooms and bathroom are upstairs on the fourth floor. The two floors are connected by a private stairway.
When Lt. Ware and the other firefighters raced into the building to save Genine, they immediately went to the fourth floor, where she was. But when they got there, they did not find a fire on the fourth floor, despite thick smoke, Chief Auffart said.
''They weren't aware that the fire started on the third floor,'' he said, noting that smoke was not visible from the third-floor windows.
While the firefighters were on the fourth floor, the fire downstairs began to heat up until all items ignited at once, creating ''an explosive-type event'' known as a flashover.
''It literally raced up - blew up - that interior stairwell,'' Chief Auffart said.
''If that stairwell had not been in there, these people would not have been trapped in there.''
The fireball was so hot that it bowed the steel railing on the staircase, Capt. Calloway said.
None of the smoke detectors in the Gray apartment was working, Capt. Calloway said.
He won't know why they weren't working until Tuesday, when he can inspect the files of the company that manages the building.
The eight-unit apartment building is owned by Metro Management, which is subsidized by the U.S. Department of Housing and Urban Development.
Robert Haley, a maintenance worker for Metro, said the Gray apartment should have had detectors.
''(Maintenance) had just done some work in there and were told to put two new ones in,'' Mr. Haley said.
Although crews were told to install detectors, Mr. Haley said he cannot be sure they actually did until he checks records on Tuesday.
Neighbors said Ms. Gray had complained to them - and to management - that her smoke detectors were not working.
More injuries
The other injured firefighters are:
- Daniel Boller Jr., 31, a firefighter for two years, who suffered burns on both arms when he accidentally touched an electrical wire while trying to reach Genine. The shock did not deter him.
''He backed up, went back down the ladder, ducked under the electrical wires and tried to get in the window to get that little girl,'' Assistant Chief Neal said. ''Even though he was injured, he was still trying to get to that child.''
Mr. Boller was treated and released.
- Joseph Lehman, 36, a firefighter for one year, who was in fair condition Saturday night at University Hospital's burn unit. He suffered second- and third-degree burns on his hands and face when he was caught in the flashover.
- Tyrone Norman, 37, a nine-year firefighter, who was treated and released at University for second-degree burns on his neck and face.
Several firefighters also have been temporarily removed from duty because of the shock and stress of seeing their colleagues injured. Officials have called in experts to help them cope.
''I'm very proud of the firefighters who were there,'' Chief Auffart said. ''Without their selfless effort, undoubtedly a 4-year-old girl would be dead today.''