So you're sitting near the gate at Philadelphia International Airport, waiting for your plane. After you read your newspaper (I hope) and finish making calls on your cellphone, check emails and Snapchat (millennials only), you look at the wall-mounted TV screen, and there's CNN.
When you walk through the terminal changing planes in Chicago, there's CNN. And when you reach your final destination, San Francisco, the airport screens are showing CNN -- not Fox, not MSNBC, not ESPN.