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.
Multiple floors and corridors inside the building had been locked down and others were evacuated due to a “hazardous materials incident,” three sources familiar and the local fire department said earlier on Thursday.
The evacuation was triggered when a Pentagon sensor system detected the possible presence of anthrax, according to first responder radio traffic and a source familiar with the incident. But the sensor system was malfunctioning, one of the sources familiar said, causing the false alarm.



I mean I don’t think smoking should be allowed inside any building for the health of everyone in the building much less one with has troves of classified data in formats that can be damaged by smoking. Fire, ash, and the residues are not good for paper or electronics.