Japan Air Self-Defense Force — 3 museum-grade prints from this operator. The F-35 Lightning II emerged from the multinational JSF programme as a fifth-generation stealth fighter integrating sensor fusion, low observables, and internal weapons carriage across F-35A, B, and C variants. Japan selected the F-35A as the primary successor to its ageing F-4 Phantom fleet, with the 302nd Squadron at Misawa among the first JASDF units to transition after decades of Phantom operations from its 1974 stand-up at Chitose. The 303rd Tactical Fighter Squadron operates from Komatsu Air Base in Ishikawa Prefecture under the JASDF Northern Air Defense Force, maintaining quick-reaction interceptors for approaches over the Sea of Japan and the Tsushima Strait. Japan licensed F-15J production from McDonnell Douglas through Mitsubishi Heavy Industries beginning in 1981, making the JASDF the largest Eagle operator outside the United States; the F-15J retains domestic AAM-4 missile integration and JASDF-specific avionics while preserving the Eagle's unmatched climb and kinematic envelope. The Mitsubishi F-2 emerged from Japan's FS-X programme as a co-developed derivative of the General Dynamics F-16 Fighting Falcon, with Mitsubishi Heavy Industries responsible for roughly sixty percent of the airframe and Lockheed Martin supplying the core design lineage. Entering JASDF service in the early 2000s, the F-2A Support Fighter — shien sentōki in Japanese doctrine — prioritises maritime strike with enlarged wing area, composite structure, and ASM-class anti-ship munitions across the island-chain mission set.