President Obama plans to address the nation Tuesday, December 1 at 8pm eastern about his plans with Afghanistan and all four major broadcast networks plan to air the address.
The address is only scheduled for 30 minutes, though some networks (ABC & NBC) look to give it one hour of coverage. Overall with the exception of ABC, which pushed its Disney Prep & Landing special to the following Tuesday, the impacts were fairly minimal:
ABC: moves 30 minute version of A Charlie Brown Christmas and Disney Prep & Landing to December 8, replacing a one hour version of A Charlie Brown Christmas previously scheduled. The 9pm-11pm portion of the schedule is unchanged.
FOX: will air the address and then the regular 2 hour So You Think You Can Dance
CBS: will air a repeat of NCIS at 8:30pm, followed by a repeat of Two & A Half Men at 9:30 and the Victoria Secret Fashion Show at 10pm (a repeat of NCIS: LA gets bumped).
NBC: Will air the regular 2 hour version of The Biggest Loser from 9pm-11pm bumping The Jay Leno Show off the schedule.