Maj. Gen. Chris Gentry, commanding general of the First Army United States Army Reserve Support Command, addresses observer coach/trainers assigned to 4th Cavalry Multi-Functional Training Brigade and 91st Training Division during Combat Support Training Exercise 91-17-03 July 14, 2017 on Camp Roberts, CA. CSTX is a 91st TD led exercise designed to assist combat-service and combat-service-support units in planning, preparing, supervising and executing of pre-mobilization collective training.

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