This week in the first Network Beat bonus segment of the Airways Podcast, Airways Senior Business Analyst Vinay Bhaskara and Columnist Rohan Anand discuss Delta's recent buildup in Boston (0:25), what Delta is doing in Raleigh-Durham (8:40), Southwest Airlines has lots of hubs (11:05), what Southwest's hubs are (14:20), how JetBlue will respond to Delta in Boston (17:12)