Operations Still Limited at Navy Yard 9/18/13
WASHINGTON - Operations at the Washington Navy Yard still haven't returned to normal, and the facility is once again open only to mission-essential personnel today.
The Navy says the yard remains an active crime scene.
Meanwhile, more details are emerging of the shooting rampage and gun battles that lasted more than a half-hour on Monday. The FBI says the average mass shooting is over within minutes, and often ends once police arrive.
The rampage by a defense contractor is raising questions about the adequacy of the background checks done on contract employees who hold security clearances.
Navy and White House security reviews have begun as a picture emerges of the gunman as an agitated and erratic figure whose behavior and mental state had repeatedly come to authorities' attention but didn't seem to affect his security clearance.