Lt. Col. Mark H. Ustaszewski accepts the 157th Operations Group guidon from Col. James P. Ryan, commander 157th Air Refueling Wing during a change of command ceremony at Pease Air National Guard Base, N.H., March 10, 2018. The change of commmand cermony represents a formal transfer of authority and responsibility from an outgoing commander to the incoming commander.(N.H. Air National Guard photo by Senior Airman Taylor Queen)