Legislators are seeking answers about how Aaron Alexis, the alleged perpetrator of the Sept. 16 Navy Yard mass shooting, was able to obtain and maintain a security clearance despite repeated run-ins ...

The hearing Thursday before the Senate Committee on Homeland Security and Governmental Affairs is to examine the adequacy of background checks and the security clearance system for federal employees ...

The first anniversary of the 12 murders at the Washington Navy Yard prompted President Obama’s management specialist to highlight multi-agency progress in tightening the security clearance process.

%27It%27s shocking%27 the typical checks wouldn%27t have raised red flags%2C says Sidney Antommarchi%2C an enterprise architect Alexis was arrested in Seattle in 2004 ...

The private contractor that employed Aaron Alexis pulled his security clearance after a psychotic episode last August but reinstated it two days later, less than six weeks before he shot to death a ...

Chairman of the Joint Chiefs of Staff says budget cuts did not cause security lapse Deputy Defense Secretary Ashton Carter will lead security review Aaron Alexis received clearance after he joined the ...