All three newscasts expanded to an hour last night to cover the attacks in Brussels. After last night’s NBC Nightly News, Lester Holt traveled to Belgium, where he will anchor tonight as did World News Tonight anchor David Muir. CBS Evening News’s Scott Pelley will anchor from New York. Nightly News was the most-watched of the network newscasts last night, according to Nielsen Fast Nationals. Below is a look at the numbers for the first half hour only. The full hour did not air in every market.
| Newscast | Total Viewers | A25-54 | A18-49 |
| NBC Nightly News | 8,792,000 | 2,232,000 | 1,624,000 |
| ABC World News Tonight | 7,976,000 | 1,808,000 | 1,303,000 |
| CBS Evening News | 7,139,000 | 1,665,000 | 1,114,000 |
*Please note the updated numbers for World News Tonight: 8,331,000 total viewers; 1,856,000 adults 25-54; 1,341,000 adults 18-49.
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