Today I learned that F-35 pilots get $400,000 helmets with 'X-ray vision' - but the Pentagon almost ditched them

F-35 fighter jets in flight.

Every F-35 pilot in the US Air Force gets their own custom-fitted $400,000 helmet, which lets them peer through the cockpit mid-flight to see what's going on in the surrounding airspace and the ground below.

This is possible through six infrared cameras embedded on to the flight's exterior, broadcasting a 360-degree video stream straight into the pilot's visor. Pilots say it's like being able to see through the hull of the aircraft, as if it were made of glass.