That same page also states that masks are required: "Federal law requires each person to wear a mask at all times in the airport and throughout the flight, including during boarding and deplaning. Refusing to wear a mask is a violation of federal law and may result in denial of boarding, removal from the aircraft, and/or penalties under federal law. A properly worn mask completely covers the nose and mouth, is secured to the head, and fits snugly against the side of the face. On the aircraft, if wearing oxygen masks is needed because of loss of cabin pressure or other event affecting aircraft ventilation, masks should be removed to accommodate oxygen masks." --TheMiddleSeat
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