Authorized by the Department of the Air Force under General Order 60 on November 25th, 1957.
Ribbon is of simple dark blue / light blue strip pattern. Thin blue lines are set towards the edges of the largely dark blue ribbon.
Award Criteria (as detailed by various official sources):
It is awarded to all service members of the U.S. Air Force who complete four years of honorable active or reserve military service with any branch of the United States Armed Forces. The Air Force Longevity Service Award is a ribbon that replaces the Federal Service Stripes previously worn on the uniform.
User Tags Detailing this Ribbon:
blue   usaf   cold war   vietnam   modern   united states   space force