Ever wondered how modern stealth fighters got that almost 'alien' look about them? Well these incredibly rare pictures show that for Boeing, the idea of a stealth fighter started as far back as the 60s.
This is Boeing's top secret 'Quiet Bird' concept, and while i might look like it's the next-generation of stealth fighter this futuristic plane is probably one of the first.
Exclusively revealed to military blog Foxtrot Alpha, these pictures show the only proof that 'Quiet Bird' ever existed and we say only proof because even Boeing can't find any documentation about the project.
Built during the Kennedy-era, this Cold War concept was built as a small-scale model which was then tested on Radar ranges as the first step in creating a fighter plane that would be invisible to Russian radar.
Unsurprisingly, the designs were hugely successful and Boeing went on to claim several patents on the development of stealth technology.
Sadly Boeing reports that 'Quiet Bird' never made it into production, but all you have to do is look at the stealth fighters and drones of today and you can immediately see that many of our 'next generation' fighters were actually modelled on designs first penned when the Beatles were storming through the charts.