Footage filmed by other passengers showed that aviation officers dragged Dr. David Dao by his hands and feet down the aisle of an April 9 flight bound for Louisville, Kentucky.
Two Chicago Department of Aviation security officers have been fired and two others were suspended for five days for their roles in dragging Dr. David Dao off a United Airlines jet at O'Hare International Airport in April.
Among those terminated was an officer on the aircraft as well as a sergeant accused of falsifying the report.
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Dao's attorney, Thomas Demetrio, who represented the injured man in the lawsuit, said in a statement: "It is unfortunate the conduct of these two City aviation employees has resulted in their losing their jobs".
An investigation by the city's Office of Inspector General found that three aviation security officers and one aviation security sergeant "mishandled" the situation, according to the office's third-quarter report.
Following the incident (as well as the undoubtedly-lucrative settlement reached between Dao and United Airlines back in April), there was, of course, an official report.
Two other officers involved in the incident were suspended for five days, as recommended by Ferguson's office.
One officer was sacked for escalating "a non-threatening situation into a physically violent one" and for the injuries caused by his "excessive force".
The investigation also shows that certain facts about the incident were deliberately removed from an employee report. The aldermen introduced an order calling Evans to testify at a public hearing on her decision to remove the word "police" from the officers' uniforms and vehicles, but the Rules Committee has not yet scheduled a hearing.
More fallout from a passenger being forceably removed from an overbooked flight. "Do not state something that is clearly contrary to video viewed by the world", Demetrio explained. But for the video, the filed report stating that only "minimal" force was used would have been unnoticed.
Dao was left bloodied and bruised in the incident that created a firestorm for the airline. Dao never raised his voice, the couple said. "When we released our review of security policies and protocols related to the incident on United Airlines flight 3411, we announced that we would consider the Office of the Inspector General's recommendations for discipline, and our actions are consistent with their conclusions and guidance".
United CEO Oscar Munoz went on national TV to apologize.
Delta now also offers $10,000 to passengers who volunteer to give up their seats of overbooked flights.