Texas Govt Code Sec. 431.134 Para 11.
Texas Superior Service Medal
The Texas Superior Service Medal shall be awarded to: 
(A) a member of the state military forces who has: 
(i) completed 30 or more years of honorable state service or a combination of state and federal service; and
(ii) continually demonstrated superior performance and service while assigned to key leadership positions demanding responsibility; or

(B) a civilian who has contributed significant service to the state military forces.
[1]
Glasshouse