Boxing in the 1950s and Floyd Patterson emerged as the youngest heavyweight champion in history (coincidentally, he beat Moore for the title left vacant by Marciano). Patterson remained the youngest heavyweight champion in history until November 22, 1986, when a 20-year-old Mike Tyson defeated the 31-year-old WBC Heavyweight Champion Trevor Berbick by TKO in round 2. The dark side of boxing once again emerged: Jake LaMotta alleged at a hearing that he had thrown a fight with Billy Fox in exchange for a try at the world Middleweight title, and Jim Norris, an important promoter of the time, was associated with Blinky Palermo and
McDonnell Douglas DC-10 Extender, are based on the -30 models. Production of the DC-10 ended in 1989, with 386 delivered to airlines and 60 to the U.S. Air Force. The DC-10 was succeeded by the related McDonnell Douglas MD-11, essentially an enlarged version of the DC-10 with a number of detail improvements. Boeing, which merged with McDonnell Douglas in 1997, conducted an upgrade program that equipped many in-service DC-10s with a glass cockpit that eliminated the flight engineer position; the upgraded aircraft were re-designated as MD-10s. The DC-10's last commercial passenger flight took place in February 2014, although freighter versions continue to operate.