"Delta has previously sold two of its wholly-owned regionals" - and those two regionals were ASA, Mesaba, and Compass.
"Comair was the only airline to operate from Concourse C" - the other only airlines to operate from Concourse C were ASA, Skywest, Shuttle America, and Chautauqua.
The potential strike in 2006 was in response to the 1113 motion, and Delta/Comair's BK judge sided with the company barring that from happening.
Other than that, pretty good reporting. If there is such a thing as good reporting.