When a national crisis hits, TV networks scramble to examine everything they’ve got on the schedule to see if it’s appropriate. “Promos and scheduled commercials are reexamined as well. The discussions include heads of programming, sales departments, standards and practices and other top officials. The shuttle tragedy on Feb. 1 illustrated the intricacies of these behind-the-scenes machinations. Heavily promoted episodes of fictional dramas were yanked; movies and specials were sidelined.”