Trump says the F-35 is too expensive, and he's not wrong. But this is what he's up against.
The Lockheed Martin F-35 Lightning II is the most advanced fighter plane ever built. It can fly at supersonic speeds, is undetectable by radar, and one version can even take off and land vertically from aircraft carriers. Sixteen years in the making, the Pentagon wants the F-35 to replace several planes used since the Vietnam era by the Air Force, Navy, and Marines.