Obvious. Radar invisibility is justifiably valuable to the air force, but it's also almost-prohibitively-expensive. It's not even a cost-benefit thing, becaus

Obvious. Radar invisibility is justifiably valuable to the air force, but it's also almost-prohibitively-expensive. It's not even a cost-benefit thing, because the benefit is there... But you don't want that cost on every plane. Tim Krieder said it best: "we have radar-invisible planes and our enemies don't have radar". For the Al Qaedas and Isises of the world that the US seems to fight so much, the F-35 is absurdly overspecced.