Department of Defense exceptions:
When an individual is alone in an office with floor-to-ceiling walls with a closed door.
For brief periods of time when eating and drinking while maintaining distancing in accordance with CDC guidelines and instructions from commanders and supervisors.
When the mask is required to be lowered briefly for identification or security purposes.
When necessary to reasonably accommodate an individual with a disability.
Department of the Air Force exceptions are as follows:
When necessary to reasonably accommodate a religious belief.
When underlying health conditions that prohibit the wear of a face covering exist and the individual is in possession of medical documentation from a health care provider outlining such a condition and the restrictions the condition places on wear of a face covering.
When outdoors and proper physical distancing can be maintained.
When actively participating in physical fitness activities either indoors or outdoors and either proper physical distancing is maintained or additional measures are implemented to mitigate the threat of transmission.
When an individual is alone in a vehicle or is sharing the vehicle only with members of their household.
When use substantively interferes with the proper wear and use of personal protective equipment necessary for the accomplishment of one's military duties.
When personnel are in primary aircrew positions during critical phases of flight or emergencies; or when using flight crew oxygen equipment.
When clear or unrestricted visualization of verbal communication are essential to safe and effective operations.