; (B) the individual and the air carrier’s employees or contractors are afforded an appropriate amount of time for such analysis before departure of a flight; and (C) with respect to any individual who is permitted to board a flight without a mask or protective face covering, other reasonable measures are available to minimize the individual’s risk of infection and the risk of the individual spreading the airborne disease. (e) Savings provision Nothing in this section shall be construed to prioritize any interest over the public interest in aviation safety or the health and safety of air carrier employees or contractors. 50203. Protective masks in airports during public health emergencies (a) In general During the period of any national emergency declared by the President under the National Emergencies Act ( 50 U.S.C. 1601 et seq.) with respect to an airborne disease, the operator of a covered airport shall require that any individual within any indoor public space on the airport premises and under the control of such operator is wearing a mask or other protective face covering except when such individual— (1) is consuming food or beverage; (2) is attending to a medical need that justifies temporary removal of the mask or face covering; (3) is directed to remove a mask or face covering by an air carrier employee, a law enforcement officer, or a person performing functions governed under chapter 449