Effective September 1, 2016 the Uniform of the Day (UOD) for all personnel assigned to or visiting the National Capital Region (NCR) is Air Battle Uniform (ABU) Monday through Friday. Previously Air Force blues were worn on Monday – Thursday, and ABU on Friday.
This AFDW Guidance Memorandum to AFW Supplement to AFI 36-2903, Dress and Personal Appearance of Air Force Personnel.
The specific change is to paragraph 1.2.14 Uniform of the Day (UOD) for Headquarters Air Force (both Air Staff and Secretary of the Air Force Staff) and HQ AFDW (and subordinate units) in the NCR.
Wear of morale undershirts for HAF and AFDW assigned personnel in the NCR
Airmen may wear morale undershirts on Friday or during special events. However, in order to standardize the AF image, only desert sand, sage green, or slate blue morale undershirts are authorized for personnel assigned to HAF and AFDW in the NCR.
Mandatory wear of Service Dress Uniform
Airmen will wear Service Dress in appropriate circumstances. Some examples include visiting Congress or congressional offices; the White House or Supreme Court; when officially visiting high ranking officials in the executive brand, legislative branch, or judicial branch, or when attending honors at Arlington National Cemetery.