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Pentagon to overhaul security clearances following review of Navy Yard shooting

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WASHINGTON — The Defense Department is likely to reduce the number of employees who hold security clearances by at least 10 percent and has vowed to overhaul the way it screens personnel, officials said Tuesday, as they released the results of several investigations into the Sept. 16 mass shooting at the Navy Yard.

The reviews offered a damning assessment of the department’s ability to monitor the trustworthiness and reliability of a workforce that grew exponentially in the wake of the Sept. 11, 2001, attacks. They also made clear that the Pentagon has issued security clearances to many employees and contractors who are not required to access classified information in the course of their jobs.

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