ABC local affiliates owned by Hearst ...

Boston, MA WCVB
Manchester, NH WMUR
Pittsburgh, PA WTAE
W. Palm Beach, FL WPBF
Portland-Auburn, ME WMTW
Kansas City, MO KMBC
Milwaukee, WI WISN
Oklahoma City, OK KOCO
Omaha, NE KETV
Jackson, MS WAPT
Fort Smith/Fayettville, AR KHBS/KHOG
Albuquerque, NM KOAT
Honolulu, HI KITV

Sinclair Broadcasting owns ...

St. Louis, MO KDNL
Columbus, OH WSYX
Asheville, NC WLOS
Dayton, OH WKEF
Mobile, AL/Pensacola, FL WEAR
Springfield, IL WICD
Springfield, MA WGGB

If memory serves, Sinclair refused to air the edition of Nightline when Ted Koppel read the names of soldiers who had died in Iraq.

Also, we're hearing that at least some program managers at local ABC affiliates around the country are planning to run rebuttal segments and/or panel with a mix of terrorism experts to add 'balance' or least deflect some criticism.