Latest news. good evening, errol. this is big. reporter: absolutely, norah. good evening. this decision by the biden administration is likely to fuel more mask confusion. the c.d.c. says an appeal is needed to protect its public health authority. meantime, though, air travelers, like the ones you see around me, will be stuck with a decision: to mask or unmask. for travelers who are immunocompromised or with young, unvaccinated children, the maskless reality is a new and frightening challenge. brian vastag traveled to alaska for treatment for his auto immune disorders. the moneyidate was lifted. now he feels stranded. it s been extremely stressful and frustrating, anger provoking. reporter: also fearful of flying home. we travel for medical care all the time, especially people with rare diseases or hard-to-treat diseases. it s going to be riskier for us. reporter: was this policy ended too soon? no question about it. reporter: cbs medical