"It's difficult to put into words the tremendous loss felt by all who knew Frederick W. Smith," FedEx CEO and President Raj Subramaniam said.

Overseeing a fleet of cargo planes from his headquarters in Memphis, he transformed package delivery by promising overnight shipments.

T he last time I saw Fred Smith was just a few weeks ago, at a meeting in Nashville. We were taking a quick break from an intense dialogue with leaders across the political spectr