Mercy Flight is being put on standby for a man who fell down a flight of stairs and hit his head on a hammer.
The man has been unconscious 7 to 8 minutes. He is breathing.
Darien Ambulance is being dispatched to Mammot Road.
UPDATE 7:07 p.m.: An assistant fire chief for Darien has requested Mercy Flight. Darien Fire is being dispatched to set up a landing zone.
UPDATE 7:09 p.m.: The landing zone is being set up at the Darien Fire Hall.
UPDATE 7:11 p.m.: Mercy Flight is responding from Buffalo. ETA, 5 minutes.
UPDATE 7:48 p.m.: Mercy Flight in the air, heading to ECMC.