False alarm apparently triggered hazmat response at Pentagon, sources say, as employees await all-clear

False alarm apparently triggered hazmat response at Pentagon, sources say, as employees await all-clear CBS News Pentagon shelter-in-place lifted due to false alarm, reports say WUSA9 Pentagon locked down and partially evacuated due to a false alarm by hazardous materials sensor, sources say WTOP No hazard found after 'severe' Pentagon alert sparks emergency response Fox News Pentagon operating normally after ‘air quality issue’ sparks shelter-in-place order NBC News