Col. Doug Schwartz, 434th Air Refueling Wing commander, presents James Christensen, 434th Civil Engineer Squadron, with a certificate of service for completing 30 years as a federal employee during a civilian commander's call at Grissom Air Reserve Base, Ind., March. 13, 2015. Civil service employees are an essential part Grissom and serve critical roles in maintaining unit readiness and daily operations. (U.S. Air Force photo/Tech. Sgt. Benjamin Mota)
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