Eighteen months into the Covid-19 pandemic, U.S. aviation has finally started to rebound — but the industry that has emerged is different than the industry that was essentially forced into a coma in the first months of the pandemic. A year after their first interview on the state of aviation, Harvard Business Review sat down to discuss the challenges (and opportunities) facing the industry with Jon Ostrower, the editor-in-chief of The Air Current, Courtney Miller, managing director of analysis for The Air Current, and Dan McKone and Alan Lewis, two Boston-based managing directors at L.E.K. Consulting who have experience advising major airlines.