The next test of the Ground-based Midcourse Defense (GMD) system has been unceremoniously cancelled after having first been delayed several times. Its removal from the Missile Defense Agency (MDA)’s test schedule is alarming for two reasons: it indicates a long-standing problem with the GMD test interceptor that they have been unable to rectify, and it has become one of many missile defense tests that have been called off in order to meet a predetermined schedule. Neither of these bode well for the U.S. ballistic missile defense system, and is another example of how MDA’s constant shifting of the GMD test schedule renders it extremely difficult to determine if progress is being made and milestones being met. 

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Read more at: Samson, Victoria. GMD Test Cancelled by MDA. Center for Defense Information 16.06.2008