Poss. Structure Fire (Frisco)
Possible Structure Fire (Frisco) FFD is on scene at the Westin Hotel, 1500 blk Legacy Dr, on a fire alarm. Engine 603 has upgraded this to a structure fire response due to smoke in the building. Units searching for possible source on 5th floor.
UPDATE – HVAC seemed to be the issue. Source found. Smoke cleared out. Hotel guests being allowed back into building. FFD clearing companies.