A: (1) In connection with the furtherance of any political or commercial interests, or when engaged in off-duty civilian employment. (2) When participating in public speeches, interviews, picket lines, marches, rallies, or public demonstrations, except as authorized by the first O-5 in the chain of command. (3) When attending any meeting or event that is a function of, or is sponsored by, an extremist organization. (4) When wearing the uniform would bring discredit upon the Army, as determined by the Commander. (5) When specifically prohibited by Army regulations. A: (1) Headgear is not required if it would interfere with the safe operation of military vehicles. Wearing military headgear is not required while in or on a privately owned vehicle (to include a motorcycle, bicycle, or convertible automobile), a commercial vehicle, or on public conveyance (such as a subway, train, plane, or bus). (2) Soldiers will not wear headgear indoors, unless under arms in an official capacity, or when directed by the commander, such as for indoor ceremonial activities. (3) Male and female Soldiers are not required to wear headgear to evening social events (after retreat) when wearing the Army service and dress uniforms or the mess and evening mess uniforms.