The Air Force just doubled down on its most controversial procurement decision — and the reason is written in the wreckage of four F-15Es lost over the Middle East. The planned F-15EX Eagle II fleet will grow from 129 aircraft to 267, a jump so large it represents a fundamental shift in how the service thinks about its fighter force for the next two decades. The decision, embedded in the fiscal 2027 budget request, effectively acknowledges what combat over Iran proved: the Air Force does not have enough heavy fighters, and the next-generation platforms that were supposed to replace them are years away from filling the gap.

Why 267?

The original plan was conservative by design. The Air Force intended to buy 129 F-15EXs to replace the aging F-15C/D air superiority fleet — aircraft that were literally falling apart from metal fatigue after four decades of service. The F-15EX would take over the homeland defence and air superiority mission while the F-35 and future F-47 handled the high-end stealth fight.

Operation Epic Fury shattered that calculus. Four F-15E Strike Eagles were lost in combat — three to Kuwaiti friendly fire on March 2, and a fourth shot down over southern Iran by a man-portable air defence system on April 3. The losses were not catastrophic in absolute numbers, but they exposed a structural problem: the F-15E fleet was already too small, too old, and too stressed to sustain a high-intensity air campaign while also meeting global deployment requirements. The F-15EX, which shares the Strike Eagle’s basic airframe but adds a modern fly-by-wire flight control system, the Eagle Passive/Active Warning Survivability System (EPAWSS), and compatibility with every weapon in the US inventory — including future hypersonic missiles — became the obvious solution. It can be produced now, on an active production line, with trained pilots and maintainers already in the force.

The Anti-Stealth Fighter

The F-15EX is not stealthy. It has the radar cross-section of a barn. In an era of fifth-generation fighters and sixth-generation concepts, buying 267 non-stealth heavy fighters seems counterintuitive. But the Air Force’s combat experience over Iran revealed a truth that procurement theorists had underestimated: mass matters.

Stealth fighters like the F-35 and the future F-47 are expensive, produced slowly, and cannot be everywhere at once. The F-22 fleet is capped at 186 aircraft and shrinking. The F-35 production line, while ramping, cannot deliver fast enough to replace every aging fighter in the inventory. And the F-47 is still years from initial operational capability. The F-15EX fills the gap with brute capability. It carries 29,000 pounds of ordnance — more than any other US fighter. It can launch 12 air-to-air missiles simultaneously. Its EPAWSS suite gives it survivability against radar-guided threats that would have been lethal to older Eagles. And Boeing’s production line in St. Louis can deliver aircraft at a pace that Lockheed Martin’s F-35 line in Fort Worth cannot match.

What 267 Eagles Mean for the Force

At 267 aircraft, the F-15EX fleet will be larger than the entire F-22 Raptor fleet. It will constitute the Air Force’s primary conventional strike platform for at least the next 15 years — carrying the heaviest weapons loads into the most demanding missions while stealth assets focus on penetrating advanced air defences. For Boeing, the expanded order is a lifeline. The company’s defence division has been battered by cost overruns on other programs, and the F-15EX represents stable, profitable production work that will sustain the St. Louis line well into the 2030s. For the Air Force, it is an acknowledgment that the perfect is the enemy of the deployable — and that a proven, producible, heavily armed fighter in hand is worth more than a revolutionary platform stuck in development. The Eagle has been declared dead more times than any fighter in history. It keeps coming back. Sources: Defense News, Air & Space Forces Magazine, The Aviationist