# EKV: Exoatmospheric Kill Vehicle (DD-011) > The Exoatmospheric Kill Vehicle (EKV) is the business end of America's Ground-based Midcourse Defense (GMD) system. A three-stage Ground-Based Interceptor rocket lofts it out of the atmosphere. There it separates, picks out the warhead with a multi-color infrared sensor and its own computers, and steers with divert thrusters into a head-on collision. It carries no explosive warhead. Telling warheads from decoys has always been its hardest problem. A planned replacement kill vehicle was cancelled in 2019, and Lockheed Martin is now building the Next Generation Interceptor. - Department: Military (also Tech) - First published: 2026-05-09 - Last updated: 2026-05-09 - Permalink: https://detailenjoyer.com/case/ekv/ - Author: Marcus Easterling (DetailEnjoyer), The Detail Department ## On the timeline - **2014**: In a test, the EKV tells its target apart from countermeasures - **2019**: The Pentagon cancels the Redesigned Kill Vehicle meant to replace the EKV - **2024**: Lockheed Martin is chosen to build the Next Generation Interceptor Full timeline: https://detailenjoyer.com/timeline/?case=ekv ## Quick facts - **DD-011-F01**: The Exoatmospheric Kill Vehicle carries no explosive. It destroys ballistic-missile warheads in space by colliding with them ('hit-to-kill'). _(Write-up · Exhibit C (Hit-to-kill))_ - **DD-011-F02**: The EKV rides a three-stage Ground-Based Interceptor rocket out of the atmosphere, then steers itself to the target with onboard sensors and thrusters. _(Write-up · Exhibit B (Rocket to space))_ ## Write-up This interceptor kills warheads without any explosives. The Exoatmospheric Kill Vehicle destroys incoming warheads in space by ramming them. 1. **Part of a bigger system**: The EKV is the intercept component of the Ground-Based Interceptor, part of the US Ground-based Midcourse Defense system against long-range ballistic missiles. 2. **Rocket to space**: When GMD tracks a threat, it launches a Ground-Based Interceptor. Its three-stage solid-fuel booster carries the EKV out of the atmosphere at near-hypersonic speed. 3. **Hit-to-kill**: The EKV destroys its target 'using nothing more than the force of a massive collision'. It carries no warhead, a feat often described as 'a bullet hitting a bullet'. 4. **Its own brain and eyes**: The EKV has a multi-color sensor and its own propulsion, communications link, discrimination algorithms, guidance and computers for picking and hitting a target. 5. **Steering thrusters**: A liquid-propellant Divert and Attitude Control System, supplied by L3Harris, gives the precise steering needed for impact. 6. **The decoy problem**: In a 2014 test the EKV told the target apart from countermeasures. Critics such as MIT's Ted Postol argue that to its sensor, warheads and decoys can look like the same flickering points of light. 7. **What comes next**: In 2019 the Pentagon cancelled the Redesigned Kill Vehicle meant to replace the EKV, citing technical design problems. In 2024 it chose Lockheed Martin to build the Next Generation Interceptor. ## Related case files - [Anduril (DD-727)](https://detailenjoyer.com/case/anduril/): A newer missile-defense maker: Anduril builds Roadrunner and Anvil interceptors. - [Supersonic Striker (DD-036)](https://detailenjoyer.com/case/supersonic-striker/): Cold War-born strategic weapons. - [XB-70 Valkyrie (DD-048)](https://detailenjoyer.com/case/xb-70-valkyrie/): The missile-defense side of the same arms race. - [Hypersonic Missiles (DD-059)](https://detailenjoyer.com/case/hypersonic-missiles/): The interceptor side: a kill vehicle built to hit incoming warheads head-on. - [Ballistic Trident (DD-627)](https://detailenjoyer.com/case/ballistic-trident/): Built to intercept ballistic-missile warheads ## Reel vs. record - **Confirmed**: EKV means Exoatmospheric Kill Vehicle. It destroys warheads in space by high-speed collision without explosives, is carried by a ground-based interceptor rocket, and uses onboard sensors, computers and thrusters. [Raytheon; L3Harris] - **Nuance**: 'identify and track its target among decoys and debris'. Decoy discrimination is the system's most debated weakness. Raytheon reports success in tests; critics argue the sensor can't reliably tell decoys from warheads. [Raytheon 2014; Postol] - **Nuance**: the Reel uses 'EKVs' as a general term, but the EKV is specifically Raytheon's kill vehicle for the US GMD system. Other hit-to-kill interceptors, such as the SM-3 kinetic warhead, use different names. [Raytheon] - **Footage**: the clips look like EKV hover tests in a test facility, not intercepts in space. L3Harris shows a similar EKV hover-test image. [L3Harris] ## Video: This Interceptor Kills Warheads Without Any Explosives (EKV: Exoatmospheric Kill Vehicle) - Duration: 23.0 s · Published: 2026-05-09 - File: https://detailenjoyer.com/assets/videos/DYI3DhYRzA_.mp4 ### Transcript DID YOU KNOW? Exoatmospheric kill vehicles, or EKVs, are missile defense interceptors to destroy incoming ballistic missile warheads in space, outside Earth's atmosphere, through direct high-speed collision, rather than explosives. After a ground-based interceptor rocket carries the EKV into space, the kill vehicle separates and uses onboard sensors, guidance computers, and small thrusters to identify and track its target among decoys and debris. NOW YOU KNOW! ## Questions & answers **Q: What does EKV stand for?** A: Exoatmospheric Kill Vehicle, the intercept part of the Ground-Based Interceptor. _(Source: Write-up · Exhibit A (Part of a bigger system) · Exoatmospheric Kill Vehicle (Raytheon / RTX); Ground-Based Midcourse Defense System (L3Harris))_ **Q: How does the EKV destroy a warhead?** A: It's 'hit-to-kill': no warhead, just the force of the collision. _(Source: Write-up · Exhibit C (Hit-to-kill) · Exoatmospheric Kill Vehicle (Raytheon / RTX); Ground-Based Midcourse Defense System (L3Harris); Raytheon kill vehicle destroys complex, long-range ballistic missile target in space (Raytheon, Jun 22, 2014))_ **Q: What carries the EKV into space?** A: A three-stage solid-fuel booster lofts it out of the atmosphere. _(Source: Write-up · Exhibit B (Rocket to space) · Exoatmospheric Kill Vehicle (Raytheon / RTX); Ground-Based Midcourse Defense System (L3Harris))_ **Q: What does the EKV use to steer into its target?** A: A liquid-propellant divert and attitude control system steers it. _(Source: Write-up · Exhibit E (Steering thrusters) · Ground-Based Midcourse Defense System (L3Harris))_ **Q: What has been the EKV's most debated challenge?** A: Critics argue warheads and decoys can look alike to its sensor; Raytheon cites successful discrimination in tests. _(Source: Write-up · Exhibit F (The decoy problem) · Raytheon kill vehicle destroys complex, long-range ballistic missile target in space (Raytheon, Jun 22, 2014); Why the EKV sensor cannot reliably discriminate decoys from warheads (T. Postol, MIT))_ ## Sources - [Exoatmospheric Kill Vehicle (Raytheon / RTX)](https://www.rtx.com/raytheon/what-we-do/strategic-missile-defense/ekv) - [Raytheon kill vehicle destroys complex, long-range ballistic missile target in space (Raytheon, Jun 22, 2014)](https://raytheon.mediaroom.com/index.php?item=2586&s=43) - [Ground-Based Midcourse Defense System (L3Harris)](https://www.l3harris.com/all-capabilities/ground-based-midcourse-defense-system) - [Why the EKV sensor cannot reliably discriminate decoys from warheads (T. Postol, MIT)](https://www.bits.de/NRANEU/BMD/documents/postol_att1.pdf) - [Pentagon terminates program for redesigned kill vehicle (Defense News, Aug 21, 2019)](https://www.defensenews.com/pentagon/2019/08/21/dod-tanks-redesigned-kill-vehicle-program-for-homeland-defense-interceptor/) - [Lockheed chosen to build new homeland missile defense interceptor (Defense News, Apr 16, 2024)](https://www.defensenews.com/pentagon/2024/04/16/lockheed-chosen-to-build-new-homeland-missile-defense-interceptor/) ## Cite this case file Easterling, Marcus. "EKV: Exoatmospheric Kill Vehicle." The Detail Department (DetailEnjoyer), case file DD-011, last updated May 9, 2026. https://detailenjoyer.com/case/ekv/