https://www.mercurynews.com/2020/05/01/southwest-airlines-changes-boarding-process-what-you-need-to-know/

Southwest Airlines has announced some changes to its usual boarding process in order to better help keep proper social distancing practices during the COVID-19 pandemic.

Travelers will now be boarding the airplanes in groups of 10, with people only lining up on one side of the Southwest’s boarding poles. This will help customers “spread out,” according to the airline.