This is making for quite a day after this morning's fire at the Natural History Museum.
The tipster tells us that the fire is out. We have reached out to D.C. Fire & EMS and will get more details as soon as possible.
UPDATE: Our tipster has informed us after speaking to building management, there was no an actual fire. Something did trigger the fire alarm - and multiple fire trucks came with lights and sirens. The fire trucks were seen inside the McDonalds with fire hoses out, but apparently did not find a fire. Sorry for the false alarm.