Pentagon workers have been told to shelter in place because of a hazmat situation (AFP via Getty Images)The Pentagon, located just outside Washington, D.C., is currently on lockdown due to an ongoing incident.Multiple areas within the defense facility have been locked down, and some personnel have been evacuated as a precautionary measure.A hazmat team from the Arlington County Fire Department is responding to what has been described as a "hazardous materials incident."A Pentagon spokesperson indicated that building systems detected an "air quality issue," prompting the precautionary measures.Authorities are investigating the significance of the detected air quality problem as this is a breaking news story.In fullPentagon on lockdown and floors evacuated as hazardous materials teams rush to defense facility