Also Wednesday, a Chicago alderman said representatives from United and the city's Aviation Department have been summoned before a city council committee to answer questions about the confrontation at O'Hare Airport.
The officers' union contract prohibits the city from releasing their names, Pride said.
If no one volunteers to get off, the airline can select passengers for removal based on criteria such as check-in time or the cost of a ticket, according to the department's Fly-Rights.
When officers asked him to leave once again, Dao again refused, saying "you can drag me." .
United Airlines CEO, Oscar Munoz, apologized for the passenger who was dragged off an overbooked flight over the weekend during a sit-down interview with Good Morning America, which aired on Wednesday, April 12. United acknowledged that passengers may have been less willing to listen to offers once they were seated on the plane.
Additionally, new cell phone video shows Dao speaking on the phone as a Chicago Department of Aviation security officer tried to get him to leave the plane.
Dao and his wife initially agreed to get off the plane, passenger Jayse Anspach said.
In most cases, passengers who are bumped from the flight because of overbooking or other reasons are informed at the gate, before they have boarded the plane. He refused to give up his seat on a flight to Louisville, Kentucky.More news: Blues great Terry to leave Chelsea
"No, I'm not going". He said Dao was not in the wrong.
"If you're injured, or dragged off the airplane, or falsely arrested, you can sue", said Andrew Harakas, head of the aviation law group at Clyde & Co.
We know what happened next.
"They take the bait ... and you dig yourself in a deeper hole", Bueermann said, comparing the United situation to that of a SC police officer seen on cellphone video in 2015 flipping a high school student backward in her desk-chair then dragging her across the classroom after she refused to leave.
After insisting that he felt "shame" over seeing video of an elderly man getting bloodied up over a seat he paid for, Munoz vowed to stop using law enforcement officers to enforce the company's policies. In the first of what is expected to be a series of protests against United Airlines, Reverend Jesse Jackson and the Rainbow PUSH coalition are planning nationwide boycotts of United.
His attorneys, along with some of his family members, are scheduled to talk to reporters Thursday.
"No one should ever be mistreated this way", said Munoz, who also pledged to conduct a wide-ranging review of company policies.