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  2. Ground-Based Midcourse Defense - Wikipedia

    en.wikipedia.org/wiki/Ground-Based_Midcourse_Defense

    A Ground-Based Interceptor loaded into a silo at Fort Greely, Alaska in July 2004.. Ground-Based Midcourse Defense (GMD), previously National Missile Defense (NMD), is an anti-ballistic missile system implemented by the United States of America for defense against ballistic missiles, during the midcourse phase of ballistic trajectory flight.

  3. Sea-based X-band radar - Wikipedia

    en.wikipedia.org/wiki/Sea-based_X-band_Radar

    The radar was able to perform its mission of tracking a target operating at ICBM speeds during the interception of a mock ICBM by a GMD interceptor on 30 May 2017. [ 19 ] [ 20 ] [ 21 ] In May 2019, the SBX-1 docked on the north side of Ford Island in Pearl Harbor, where it underwent maintenance.

  4. 100th Missile Defense Brigade - Wikipedia

    en.wikipedia.org/wiki/100th_Missile_Defense_Brigade

    The mission of 100th MDB (GMD) is ground-based mid-course defense (GMD) of the United States.A sensor network of satellites, sea-based radars, and land-based radars detect enemy ballistic missile attack by tracking launches, following the trajectories, and determining if these trajectories are headed for the U.S. homeland. [5]

  5. United States national missile defense - Wikipedia

    en.wikipedia.org/wiki/United_States_national...

    As of 2006, the GMD system is operational with limited capability. GMD is designed to intercept a small number of nuclear-armed ICBMs in the mid-course phase, using Ground-based interceptor missiles (GBIs) launched from within the United States in Alaska and California. GMD uses non-nuclear GBIs with a kinetic warhead.

  6. Ground-Based Interceptor - Wikipedia

    en.wikipedia.org/wiki/Ground-Based_Interceptor

    On 1 August 2022, the Missile Defense Agency awarded Northrop Grumman a contract to upgrade the GMD Weapon System (GWS) to modernize code for the Ground-based interceptors (GBIs) hardware (by 2026), [16] [17] as their successor Next generation interceptors (NGIs) are made available (on or before 2026). The software upgrades allow the GBIs new ...

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