https://www.cnet.com/news/super-bowl-2019-high-tech-show-to-include-razzle-dazzle-for-your-retinas/

As our sister site TechRepublic reports, the brand new Mercedes-Benz stadium in Atlanta that's hosting the championship is embedded with over 4,000 miles of fiber to support a network that includes plenty of internet-of-things sensors throughout the building. The dome also has 90 miles of audio cabling and nearly 2,000 Wi-Fi access points. 

On top of all that digital infrastructure, CBS Sports, which will broadcast the biggest event in American television (Disclosure: CBS is CNET's parent company), will also be using 2,000 strands of additional fiber and 330 recording channels. It's required to support the 115 total cameras and five sets around the stadium that will be used to catch all the angles of each play, as well as the halftime show featuring Maroon 5, not to mention the pre- and post-game festivities.