If a viewer took a few moments to pour a cup of coffee or make a bowl of cereal Thursday morning, they easily could have missed the scant coverage on ABC’s Good Morning America of Senate Democratic Leader Chuck Schumer threatening Supreme Court justices – news that received just 27 seconds of air time. Meanwhile, acrobat Nik Wallenda’s high-wire walk across a volcano got 5 minutes and 47 seconds, over 12 times more.