Staffers at NBC’s HQ in Washington, DC, which houses NBC News, MSNBC and WRC-TV, had some visitors yesterday – a containment unit who sealed off an area of the building after asbestos was found.

According to a memo obtained by the NYObserver, crews “discovered that glue on the back of baseboard material in the first floor across the back of the buildings has been found to contain asbestos.”

The area will soon be home to the WRC newsroom but once included the offices of NBC correspondents Chuck Todd and Lisa Myers.