The
Air and Space Overseas Service Ribbon (
ASOR) was approved in 1980 by order of General
Lew Allen, Air Force Chief of Staff. The award is issued in two grades, being that of "short tour" and "long tour." On 16 November 2020, the Air Force Overseas Service Ribbon was renamed to the Air and Space Overseas Service Ribbon by the Secretary of the Air Force. The Air and Space Overseas Short Tour Service Ribbon is awarded for less than two years of duty or as directed by Department of the Air Force policies. Normally, the Short Tour Service Ribbon is awarded for a permanent duty assignment of at least 300 days within an 18-month time span; such assignments are generally served unaccompanied by family members, though a short tour assignment need not be unaccompanied. Historically, most Short Tour Service Ribbons were awarded for service in
South Korea, by far the most common short tour assignment in the USAF. From June 2003 until April 2011, Airmen serving in hostile environments for 181 days or more qualified for the Short Tour Service Ribbon under a temporary exception to rules outlined in AFI 36–2110. However, this exemption was rescinded by General
Norton A. Schwartz in April 2011 and Airmen will no longer qualify for the award if they arrive in a hostile environment on or after 1 July 2011. The Air and Space Overseas Long Tour Service Ribbon is issued for completion of a standard overseas service assignment of two years or more in length with additional awards denoted by oak leaf clusters. Long tour credit is awarded for completion of an overseas long tour (2 years) prescribed by Department of the Air Force Instructions, or to any member assigned to a United States or overseas location who is subsequently sent under temporary duty orders (to include combat tours) for 365 or more days within a 3-year time frame. Additional awards of the Air and Space Overseas Service Ribbon are denoted by
oak leaf clusters and Department of the Air Force regulations permit the receipt and wear of both the short and long tour ribbons simultaneously, wherein the short tour ribbon takes a higher precedence by being worn to the wearer's right of the long tour ribbon. The
"A" device is authorized only on the short tour ribbon to any service member who performs a tour of duty at an
arctic based Air Force or Space Force facility; most commonly
Pituffik Space Base in Greenland. ==Coast Guard==