Noon

Aerial images of the scene at a National Security Agency gate at Fort Meade shows that a white SUV marked "NSA Police" is damaged, with its front end crumpled and the hood up. The other damaged vehicle is a dark, unmarked sport utility vehicle.

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11:50 A.M.

The FBI says the shooting at the NSA gate is not believed to be related to terrorism.

FBI spokeswoman Amy J. Thoreson said in an email Monday that the shooting scene is contained. She says the agency is working with the U.S. Attorney's Office in Maryland to determine if federal charges are warranted.

Thoreson also says FBI agents are doing interviews with witnesses.