F-22 Raptor, the Air Force's most advanced fighter, whose production line will have to begin shutting down if more jets aren't ordered soon.

WSJ: Lobbyists Line Up to Torpedo Speech Proposals

As the most expensive defence project ever undertaken starts to come to fruition, the BBC has been given exclusive access to the world's most advanced fighter jet, the Joint Strike Fighter or F-35.

BBC: Joint Strike Fighter: Jet that's a 'spy in the sky'