AIM-260 JATM.

The AIM-260 JATM (Joint Advanced Tactical Missile) is a United States next-generation long-range air-to-air missile developed for the U.S. Air Force and U.S. Navy as a successor to the AIM-120 AMRAAM family. It is designed principally for beyond-visual-range interception of enemy fighters and other high-value airborne targets, with emphasis on longer-range performance and greater ability to defeat electronic-warfare jamming than existing AMRAAM variants. The program is managed within the U.S. military air-to-air weapons enterprise, including the U.S. Navy's Air-to-Air Missiles Program Office PMA-259, which is responsible for acquisition, development, and sustainment of air-to-air missile systems. The manufacturer and many detailed program arrangements remain publicly restricted because of the highly classified nature of JATM.

The AIM-260 became publicly known in 2019 and was developed in response to the increasing reach and sophistication of foreign air-to-air missiles, particularly advanced Chinese weapons. A central design requirement has been to achieve significantly greater range than the AIM-120 while remaining within broadly the same external size envelope, an important consideration for internal carriage aboard low-observable aircraft such as the F-22 Raptor and F-35 Lightning II. Official imagery confirmed by the U.S. Air Force shows a highly streamlined cylindrical airframe with four tail-mounted fins and no visible mid-body aerodynamic surfaces, producing a notably cleaner configuration than the AIM-120. The first public sighting of an actual AIM-260 occurred in May 2026 when the missile was photographed on a U.S. Navy F/A-18F Super Hornet operated by VX-31, confirming that the previously released official renderings closely reflected the physical missile configuration.

The AIM-260 appears to devote a substantial percentage of its internal volume to propulsion. Official imagery and munition markings indicate an elongated solid-rocket motor section compared with the AIM-120, supporting assessments that its increased performance may be obtained partly through more energetic propulsion while retaining a compact external form. Advanced highly loaded propellant technology, a dual-pulse motor arrangement, and thrust-vector control have all been discussed in open-source technical analysis as possible means of improving range, energy retention, and endgame maneuverability; however, none of these specific features has been officially confirmed as part of the operational missile. Its exact dimensions, weight, propulsion architecture, speed, and maximum engagement range remain classified.

The AIM-260 is also expected to introduce a substantially more sophisticated guidance and networked engagement architecture than earlier air-to-air missiles. Its detailed seeker design remains classified, and there is no official public confirmation of an AESA, imaging-infrared, passive RF, or multi-mode seeker arrangement. Advanced network connectivity is nevertheless expected to be central to the weapon's operational concept, allowing targeting information and mid-course updates to be supplied by platforms other than the aircraft that launched the missile. Such an architecture would permit fighters, unmanned aircraft, airborne surveillance platforms, and other distributed sensors to contribute targeting data during long-range engagements. U.S. planning has also linked the AIM-260 with future Collaborative Combat Aircraft, indicating that the weapon is expected to become part of a wider distributed air-combat network rather than functioning solely as a conventional fighter-launched missile.

The AIM-260 program has advanced through flight and live-fire testing toward production and operational fielding. Fiscal Year 2026 U.S. budget documentation included procurement funding associated with the missile, providing a public indication that JATM was moving beyond development and test activities toward acquisition, although the exact production status, inventory size, and operational deployment schedule remain classified. Its international importance increased significantly on 6 August 2026, when the Australian Government announced an investment of almost A$736 million to acquire the AIM-260 for the Royal Australian Air Force. Australia will become the first country outside the United States to operate the missile, with the Australian government describing it as a high-speed, long-range air-to-air weapon. Australian integration is planned first on the F/A-18F Super Hornet, followed by the F-35A Lightning II and EA-18G Growler, establishing the AIM-260 as both a future U.S. long-range air-combat weapon and an emerging allied capability for high-end air warfare in the Indo-Pacific.

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