The Chief of Naval Operations said he hoped to have results of that review within two weeks.
An inspector general report found the Navy did not effectively mitigate the risks of having private contractors with advanced security clearance.
The Naval officer said that cost would not be a factor should they find any vulnerabilities in their review.
House Armed Services Committee Chairman Buck McKeon began the hearing on sequestration with a moment of silence for the victims of the mass murder at the Navy yard in Washington.
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