David Kestenbaum, NPR
The exterior of the Los Alamos National Laboratories facility.
Energy Department officials say they have asked the FBI to help investigate the disappearance of two classified computer disks at Los Alamos National Laboratory. At a press conference Thursday, the agency said there is no "evidence of activity with a hostile intelligence motive" — but criminal charges may be warranted under the law. NPR's David Kestenbaum reports.