The F-35 is one of the most complex machines ever built, a 1,200mph single-engine fighter/bomber. Lockheed won't confirm, but according to GlobalSecurity.org stealth technology reduces its radar profile to that of a golf ball. Assembled in a mile-long building, the plane is crammed with sensors that allow the pilot to "see" through the bottom of the cockpit via a helmet display. The outer skin is attached to the titanium-and-aluminum frame with a precision that Mercedes-Benz can only dream of. A variance of several ten-thousandths of an inch from spec is enough to produce radar reflections that degrade the plane's stealth capability. Onboard computers running 9 million lines of code allow multiple F-35s to share encrypted communications to triangulate enemy positions. With an internal bomb load of 4,700 pounds in stealth mode and 18,000 pounds when carried on noisier underwing pylons, the plane is designed to sneak in and destroy enemy air defenses and return for full-scale bombing.