Season 2 Episode 3: Liam Martin, Paula Ebben and Jon Keller discuss the Merrimack Valley gas explosions, WBZ's Kristina Rex has a first-hand account of what it was like to live through them, Matt Brown on his new book about his journey back from a hockey accident that paralysed him, CBS News's Major Garrett's new book on covering the Trump White House, and Ayanna Pressley consultant Alex Goldstein on how she pulled off her upset win.