F-35 Pilots Test Aircraft in Extreme Sub-Zero Conditions

F-35 test pilots are starting the aircraft's engine and simulating takeoffs in extreme cold temperatures with special arctic gear as a way to prepare the stealth fighter to perform in combat. The testing, which will finish up at Eglin Air Force Base, Fla., in March, assesses the ability of the aircraft to start up, launch afterburners and even function in short-takeoff-and-landing, or STOVL, mode -- in extreme arctic temperatures, F-35 test pilot Cmdr. Tony "Brick" Wilson said.

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