deployment; Department of the Air Force yellow stands for excellence, and the last two stripes (scarlet and blue) stand for the United States. References External links Air Force Expeditionary Service Ribbon Air Force Personnel Center New ribbon recognizes deployed airmen, Air Force Personnel Center Public Affairs, 9/26/2003 Expeditionary Service Ribbon Awards and decorations of the United States Space Force Awards established in 2003 Military ribbons of the United States