The story

A missile shield test was a "smashing success," Pentagon officials said Friday, despite the failure of the test to put to rest concerns that the interceptor might not be able to differentiate between real missiles and decoys.

The ground-based interceptor missile, launched from Vandenberg Air Force Base in California, destroyed a long-range ballistic missile launched from Kodiak, Alaska, the Defense Department's Missile Defense Agency said.

But one key aspect of the test -- to see whether the system could tell the difference between a missile and a decoy aimed at confounding its "seek" systems -- failed because the decoy did not deploy. Read full article »

CNN's Jamie McIntyre and Adam Levine contributed to this report

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