Given the task definition and input, reply with output. You will be given a passage, and your task is to generate a Yes/No question that is answerable based on the given passage.

Excluding limited exemptions for religious accommodation, the United States Army, Air Force, and Marine Corps have policies that prohibit beards on the basis of hygiene and the necessity of a good seal for chemical weapon protective masks. The official position is that uniform personal appearance and grooming contribute to discipline and a sense of camaraderie.
are you allowed to have a beard in the air force?