MIL-I-14639/21 Complete Document History
Insignia, Grade, Senior Master Sergeant, Air Force (Superseded by MIL-DTL-14639/21


Obsolete Revision Information:
   REVISION B - INSIGNIA, GRADE, SENIOR MASTER - Sept. 14, 1990
   REVISION A - INSIGNIA, GRADE, SENIOR MASTER - Oct. 6, 1975
   REVISION C - INSIGNIA, GRADE, SENIOR MASTER - Jan. 1, 1960