Col. Lawrence Christensen, 185 Air Refueling Wing Commander, passes the ceremonial spear to the new Wing Command Chief Master Sgt. Phillip Frank at a Change of Authority ceremony held at the Air National Guard base in Sioux City, IA onFebruary 7, 2015. Frank was chosen to become the unit’s sixth Command Chief Master Sgt. due to the impending retirement of former Wing Command Chief Master Sgt. Dave Miller. (U.S. Air National Guard photo by Tech. Sgt. Bill Wiseman/Released)