Montana Air National Guard Chief Master Sgts. Sean P. O'Connell, Lynn U. Oatman, Joel R. Clum and Chad W. Anderson were inducted into the top United States Air Force enlisted rank during the MTANG Chief Induction Ceremony held at the Meadowlark Country Club in Great Falls, Mont., Oct. 14, 2017. ( Air National Guard photo/Senior Master Sgt. Eric Peterson)

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Keywords: air, chief, guard, induction, master, montana, national, sergeant