The F-35 has hit another snag - this time because it's too stealthy

During an exercise at Mountain Home Air Force Base in Idaho, US Air Force F-35A pilots set out to practice evading surface-to-air missiles. In order to be seen and targeted, the F-35As had to turn on their transponders, announcing their presence.

Produced by Jacqui Frank. Original reporting by Alex Lockie.

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