21.   News Corp. said it performs a vital role by injecting long-absent competition in the TV broadcast marketplace, boosting available choices of entertainment and news programming.

22.   Now, television new executives are exploring niche news programming.

23.   On the day of the tragedy, most local outlets carried news programming from their affiliated radio networks.

24.   Some news programming would disappear.

25.   The center, a nonprofit organization, was the main source of public affairs and news programming for the Public Broadcasting Service.

26.   The most glamorous component of NBC is the network, which produces and distributes entertainment and news programming.

27.   The network, which will be available only in about two million homes to start with, will feature entertainment and news programming with the common theme of people.

28.   The winner will undoubtedly offer sharper news programming.

29.   TV viewers across the country are far more often exposed to campaigning politicians through paid advertising than through broadcast news programming.