How to land the new Joint Strike Fighter
The BBC has been given exclusive access to film the world's most advanced fighter jet - the F-35 Joint Strike Fighter, built by Lockheed Martin for the US and UK military.
Britain had planned to buy around 150 aircraft for the RAF and Royal Navy - but with each plane costing at least £70m, that number is likely to fall.
Jonathan Beale visited the US Navy's Patuxent River Air Base in Maryland where he was given a chance to try his hand at landing the fighter in a simulator.