"Arguably, [9/11 news coverage] was one of the last examples of a common news culture, where the country was knit together by these horrendous attacks... united by a common enemy," says Andrew Heyward, who was president of CBS News during 9/11 — noting that broadcast networks shifted into cable news mode, offering continuous coverage, with no commercials, from the attack on a Tuesday through to Saturday. Aaron Brown, who anchored CNN's 9/11 coverage that day from a rooftop, says the disaster also helped cement the idea that TV news – especially cable news channels – were expected to offer continuous coverage of major news events more often. Brown notes, instead of spending 24 hours covering a wide range of subjects, major American cable news channels excelled when they had one big, highly emotional story to cover that the audience wouldn't dare turn away from. "The lesson of 9/11 was that you need one great story," he adds, noting that cable news channels still tend to cover a narrow range of popular stories each day. "You feel like a schmuck if you say, [after covering a huge tragedy], 'Let me tell you about the weather.'"