NBC and ABC are developing dueling miniseries about the Sept. 11 attacks. NBC has hired Boomtown's Graham Yost to pen a limited series that chronicles the events leading up to the fateful day. Based on the best-selling 9/11 Commission Report, the Peacock project would likely air during the 2006-07 season. Details about ABC's version are being kept under wraps, although Variety reports that it would also be based on the 9/11 Commission Report.