As chief commercial officer, Guffey is responsible for accelerating UPS’s profitability and growth. He acknowledges that innovation is a cultural challenge inside a large organization approaching its 120th anniversary. UPS’s approach to modernization often reveals the tension between transformation and legacy.

The deceased are believed to include the three people aboard the plane, who were identified Thursday by UPS as Capt. Richard Wartenberg, First Officer Lee Truitt and International Relief Officer Capt. Dana Diamond.

Investigators are reviewing 63 hours of data collected from the black box of a UPS cargo plane involved in a deadly crash that killed at least 13 people in Louisville, Kentucky, earlier this week. Nine people remain missing as authorities sift through the wreckage of Tuesday's crash in an attempt to piece together what went wrong.

American Flight 191 lost its left engine while taking off in 1979, causing the plane to crash. Federal investigators found improper maintenance damaged the pylon, which connects the engine to the wing.

The cockpit voice recorder captured a persistent bell that began about 37 seconds after the crew called for takeoff thrust, and the bell continued until the recording ended, an NTSB official said.

The company is being priced as a low-growth dividend play, but UPS actually has an opportunity to increase profitability significantly in the coming years.

UPS said it is temporarily grounding part of its fleet of aircraft after a cargo plane crashed into a ball of flames shortly after taking off from Louisville Muhammad Ali International Airport in Kentucky earlier this week.

A deadly UPS cargo plane crash at Louisville Muhammad Ali International Airport triggered a temporary airfield shutdown, and could lead to delays.