Robert O & # 39; Neill speaks during book signing and lecture at the Richard Nixon Library on July 26, 2017 in Yorba Linda, California.
Phillip Faraone | Getty Images
A former Navy SEAL who said he killed Osama bin Laden was banned from Delta Air Lines this week for not wearing a face mask on a flight, according to a person familiar with the matter.
All US airlines require travelers to wear masks on board flights. This is part of their efforts to address concerns about flying during the Covid pandemic and prevent the disease from spreading to passengers and crew. Airlines have taken a tough stance, telling travelers that they will be denied service if they don't wear a mask on board and even banned some who violate the guidelines, including high profile passengers.
The Centers for Disease Control and Prevention recommends that people wear fabric face covers in "public settings where other social distancing measures are difficult to maintain". The CDC says wearing a mask can help prevent that person from passing the disease on to others and warns that some people could transmit the disease even if they haven't developed symptoms.
Robert O & # 39; Neill, who has more than 380,000 Twitter followers, tweeted a selfie on Wednesday on board a Delta flight to Newark, without a mask. Other travelers in the frame carried them. The tweet was later deleted. O & # 39; Neill did not immediately respond to a request for comment.
O & # 39; Neill, who told the Washington Post in 2014 that he shot the al-Qaeda leader in the 2011 raid in Pakistan, is hardly the first person Delta banned for violating mask policy. Delta has put around 130 people on its no-fly list for not wearing masks.
"Part of each customer's obligation before traveling with Delta is to be required to acknowledge our updated travel policies, including wearing a mask," a Delta spokesperson said in a statement. "Failure to comply with our mask-wearing mandate could mean that Delta will no longer be able to fly in the future."