Heat radiation coming from inside a pit, however, is more likely than not to encounter the pit's wall before it escapes into the outside world.

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Stepping inside, I came to a rail overlooking a shallow pit.

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The McLaren drivers were told to save fuel but soon Button was challenging Hamilton and he took the lead briefly by going around the outside of Turn 12, which becomes the inside of Turn 13, the corner on to the pit straight.

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The computer-controlled A380 mock-up, the only one in the U.S., is located in a fire pit so firefighters can simultaneously practice fighting fires outside and saving people inside.

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