Three chevrons and three rockers with crossed rifles between chevrons and rockers. The pay grade E-8 is shared with First Sergeant of Marines. In the Army, the rank and insignia are the same without the crossed rifles. In the Air Force, the rank is senior master sergeant who wears a technical sergeant insignia with one chevron above. Navy and Coast Guard equivalents are senior chief petty officer who wears the chief petty officer insignia with one star above the eagle.