Command Sergeant Major Roberts’s key assignments include: Command Sergeant Major, 3^rd Expeditionary Sustainment Command (ESC), Fort Knox; Command Sergeant Major, U.S. Army Garrison, Fort McPherson/Gillem, Georgia; Command Sergeant Major, 7^th Special Forces Group Support Battalion, Fort Bragg; S-3 Operations Sergeant Major, 3^rd Sustainment Brigade, Fort Stewart, Georgia; and First Sergeant, HHC, Division Support Command, 82^nd Airborne Division, Fort Bragg. During his tenure as the CSM, 3^rd ESC, the unit was converted to a Joint Sustainment Command (JSC-A). Under CSM Roberts’ leadership, the JSC-A excelled  in providing command and control over sustainment and distribution activities (food, water, fuel, transportation, maintenance, ammunition and supplies) for in excess of 200,000 U.S. and Allied Forces personnel in United States Forces – Afghanistan battle space.