Key Facts

• A hazardous materials incident occurred at the Pentagon on Thursday.
• The Arlington County Fire Department and Pentagon Force Protection Agency responded with hazmat teams.
• The Pentagon implemented a shelter-in-place order for some floors from the second to fifth levels.
• Some floors were evacuated while others were told to stay inside and avoid leaving.
• The incident was triggered by systems detecting an air quality problem inside the building.
• Pentagon officials said they used safety systems to protect occupants and were investigating the cause.
• Staff were instructed to move in-person meetings to virtual meetings during the incident.
• The situation was ongoing and authorities planned to provide updates.