<P> The year 1991 also saw the last major change to the enlisted rank insignia . In October 1991 General McPeak and Chief Master Sergeant of the Air Force Pfingston announced that the senior NCO tier would have new chevron layouts and that all chevrons would have a white star in the center . The change in senior NCO chevrons was the first since chevrons came into being in 1948 . Until that time , Master Sergeant had been composed of six inverted chevrons ( six down ) with none pointing up , Senior Master Sergeant six down with one up and Chief Master Sergeant six down with two up . The new layout changed the insignia to the current layout ( see chart above ) . The second change , changing the star color to white , was actually two changes in one . It added a star to the Airman through Senior Airman rank insignias where there had been none since 1975 ( the blue star carried by these chevrons was the same color as the blue in the stripes giving the impression that the star was not there ) and changing the silver star on the NCO and senior NCO chevrons to white . </P>
<P> The year 1991 also saw the last major change to the enlisted rank insignia . In October 1991 General McPeak and Chief Master Sergeant of the Air Force Pfingston announced that the senior NCO tier would have new chevron layouts and that all chevrons would have a white star in the center . The change in senior NCO chevrons was the first since chevrons came into being in 1948 . Until that time , Master Sergeant had been composed of six inverted chevrons ( six down ) with none pointing up , Senior Master Sergeant six down with one up and Chief Master Sergeant six down with two up . The new layout changed the insignia to the current layout ( see chart above ) . The second change , changing the star color to white , was actually two changes in one . It added a star to the Airman through Senior Airman rank insignias where there had been none since 1975 ( the blue star carried by these chevrons was the same color as the blue in the stripes giving the impression that the star was not there ) and changing the silver star on the NCO and senior NCO chevrons to white . </P>
when did air force master sergeant stripes change
when did air force master sergeant stripes change
1991
1991