The Pentagon evacuated personnel after internal systems detected an air quality issue, which proved to be a false alarm.
MSN on MSN
Pentagon lifts lockdown after faulty sensor sparks anthrax scare, hazmat response activated
Sean Parnell said testing ruled out any danger after air quality alert triggered emergency procedures inside the Pentagon ...
The Pentagon was locked down and partially evacuated on Thursday due to a false alarm by a hazardous materials sensor, two sources familiar told CNN.
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