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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.
General Material Designation (GMD) is a phrase or term interposed in brackets following the title of a catalogue or archive record to denote an item's material type. The usage of GMD in cataloging and classifying records was encouraged by the recording standard Anglo-American Cataloging Rules (AACR2). [1]
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]
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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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.
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