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Pentagon says no hazard

Pentagon returns to 'normal operations' after air quality issue prompted alarm

The Pentagon has returned to "normal operations" after an air quality issue prompted a shelter-in-place order for parts of the complex.

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· 8h · on MSN

Pentagon locks down over 'air quality issue'

Pentagon says no hazard after shelter in place over air quality issue

Pentagon on lockdown as authorities investigate hazardous-materials alert

Staff at the Pentagon were ordered to shelter in place Thursday morning due to a hazardous-materials alert at the building, authorities said.

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Air testing confirms 'no hazard exists' at Pentagon after lockdown incident

Pentagon lockdown and evacuation was due to a false alarm, two sources say

All-clear given after lockdown over air quality alarm at the Pentagon

It took several hours for teams to confirm there were no hazards and the all-clear was given.

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Pentagon investigating possible hazmat situation, reports that system detected air quality issue

False alarm apparently triggered hazmat response at Pentagon, sources say