How Ed Bastian turned Delta into America’s most profitable airline, while giving employees billions along the way

Bastian poses with a Rolls-Royce Trent 7000 and 1000 engine casings at Delta’s headquarters in Atlanta.
Bastian poses with a Rolls-Royce Trent 7000 and 1000 engine casings at Delta’s headquarters in Atlanta.
Mackenzie Stroh for Fortune