Lockheed Martin — 2 museum-grade prints across the catalogue. The F-35 Lightning II program became the most expensive weapons development effort in history while simultaneously delivering the first mass-produced stealth fighter available to allied air forces beyond the United States. The F-35A's sensor fusion architecture — combining radar, electro-optical targeting, and distributed aperture feeds into a single pilot picture — redefined how fourth- and fifth-generation aircraft cooperate in contested airspace. The F-22 Raptor became the world's first operational fifth-generation fighter when the 27th Fighter Squadron at Langley AFB declared initial operational capability in December 2005. The ATF programme's combination of supercruise, thrust vectoring, and low observability set performance benchmarks that rival air forces still chase in PAK FA and J-20 programmes.