Update by Meteor Blades at 11:48:
Scanner traffic indicated at least two officers were down, one near a dumpster, and another taken by ambulance to a hospital. A dispatcher said one patient was wounded at Elite Vision, located [in] an adjacent building at 3470 Centennial Blvd. A later dispatch said at [least] four were injured and an officer was heard requesting an ambulance. Another officer indicated wounded patients were being taken to Penrose Hospital, 2222 N. Nevada Ave. [...]
One officer said on his radio that the gunman shot out the back window of his cruiser as the officer tried to "get a look” at him. A dispatcher said the gunman wore a long coat with a "hunting-type" hat.