As mask mandates remain in place for public transportation, the Federal Aviation Administration (FAA) has received over 3,000 reports of disorderly passengers. Of those, 2,300 are for passengers unwilling to comply with keeping their masks on.

Some of the most high-profile cases of unruly passengers on airplanes this year include a Southwest Airlines flight attendant who was allegedly punched in the face and lost several teeth. Also, an off-duty Delta Air Lines flight attendant allegedly assaulted two on-duty flight attendants.

According to CNN, the FAA has identified 465 potential federal rule violations and has taken action in 57 cases.

Sara Nelson of the Association of Flight Attendants labor union said Sunday to CNN that the situation was “out of control.”

“We are hearing from flight attendants who are saying I’m concerned about going to work now,” she said. “This is so pervasive in our workplace that I’m concerned about going to work — I’m actually afraid to go to work.”

Airlines like Southwest and American have chosen to ban alcohol from their flights to help combat some of these violent behaviors.