They are taught to look above and below seats and in lavatories and galleys, all the while watching the ceiling of the cabin to see if gasses are building that would create a flashover fire.

WSJ: Airplane Fires: Dallas-Fort Worth International Airport's Firefighter Training

In a scathing report, he concluded that investigators in the Willingham case had no scientific basis for claiming that the fire was arson, ignored evidence that contradicted their theory, had no comprehension of flashover and fire dynamics, relied on discredited folklore, and failed to eliminate potential accidental or alternative causes of the fire.

NEWYORKER: Trial by Fire

But Hurst concluded that it was a natural product of the dynamics of fire during post-flashover.

NEWYORKER: Trial by Fire

One of the fire investigators, who had been standing by an open door in the living room, escaped moments before the oxygen-starved fire roared out of the room into the hallway a fireball that caused the corridor to go quickly into flashover as well, propelling the fire out the front door and onto the porch.

NEWYORKER: Trial by Fire

In a small fire, a V-shaped burn mark may pinpoint where a fire began, but during post-flashover these patterns can occur repeatedly, when various objects ignite.

NEWYORKER: Trial by Fire

Court testimony from witnesses confirmed that there had been a grill, along with a container of lighter fluid, and that both had burned when the fire roared onto the porch during post-flashover.

NEWYORKER: Trial by Fire