Seeing the unseen in defense and aerospace.
Behind every radar-evading airframe is an army of maintainers sanding, sealing, and spraying coatings that most of the public never thinks about. Radar-absorbing materials are stealth's least glamorous and most operationally decisive component — and the F-35 program's early coating troubles nearly broke the sustainment budget.
From 750 F-22s on the drawing board to fewer than 200 in the hangar, America's low-observable fighter fleet keeps getting smaller and more expensive. As NGAD costs spiral past $300 million per airframe, the Air Force is confronting an uncomfortable truth: exquisite survivability may no longer be affordable at scale.
Radar cross-section numbers dominate the stealth conversation, but heat never got the memo. As IRST sensors proliferate across rival air forces, the infrared signature is becoming the metric that matters — and the one the Pentagon talks about least.
Every few years, a claim surfaces that someone's radar 'saw' an American stealth aircraft. Some are exaggerated, some are misread, and a few are genuinely instructive. We sort the physics from the folklore in five of the most-cited cases.