aircraft. Raytheon is also working with the Missile Defense Agency to develop the Network Centric Airborne Defense Element (NCADE), an anti-ballistic missile derived from the AIM-120. This weapon will be equipped with a ramjet engine and an infrared homing seeker derived from the Sidewinder missile. In place of a proximity-fuzed warhead, the NCADE will use a kinetic energy hit-to-kill vehicle based on the one used in the Navy's RIM-161 Standard Missile 3. The -120A and -120B models are currently nearing the end of their service life while the -120D variant has just entered full production. AMRAAM was due to be replaced by the USAF, the U.S. Navy, and the U.S. Marine Corps after 2020 by the Joint Dual Role Air Dominance Missile (Next Generation Missile), but it was terminated in the 2013 budget plan. Exploratory work was started in 2017 on a replacement called Long-Range Engagement Weapon. In 2017, work on the AIM-260 Joint Advanced Tactical Missile (JATM) began to create a longer-ranged replacement for the AMRAAM to contend with foreign weapons like the Chinese PL-15. Flight tests are planned to begin in 2021 and initial operational capability is slated for 2022, facilitating the end of AMRAAM production by 2026. In July 2022, Raytheon announced the AIM-120D3 became the longest-range variant in testing, as well as an air-launched adaptation of the NASAMS-based AMRAAM-ER called the AMRAAM-AXE (air-launched extended envelope). The development of AIM-120D3 and AMRAAM-AXE is likely driven by the PL-15 performance. Ground-launched systems The Norwegian Advanced Surface-to-Air Missile System (NASAMS), developed by Kongsberg Defence & Aerospace and fielded in 1994-1995, consists of a number of towed batteries (containing six AMRAAMs launching canisters with integrated launching rails) along with separate radar trucks and control station vehicles. The US Marine Corps and the US Army tested launching AMRAAM missiles from a six-rail carrier on HMMWV as part of their CLAWS (Complementary Low-Attitude Weapon System) and SLAMRAAM (Surface Launched AMRAAM) programs, which were canceled due to budgetary cuts. A more recent version is the High Mobility Launcher for the NASAMS, made in cooperation with Raytheon (Kongsberg Defence & Aerospace was already a subcontractor on the SLAMRAAM system), where the launch-vehicle is a Humvee (M1152A1 HMMWV), containing four AMRAAMs and two optional AIM-9X Sidewinder missiles. AMRAAM-ER As part of the SLAMRAAM project, Raytheon offered the Extended Range upgrade to surface-launched AMRAAM, called AMRAAM-ER. The missile is actually an Evolved Sea Sparrow Missile using