U.S. Air Force Tech. Sgt. John Valles, 144th Aircraft Maintenance Group engine shop, explains how a jet engine operates to a crowd of attendees at the 144th Fighter Wing 2016 Open House Oct. 14, 2017 at the Fresno Air National Guard Base, California.This years open house had a number of exhibits for the community to explore, including static display aircraft, a car show, and various commercial vendors. (U.S. Air National Guard Photo by Staff Sgt. Christian Jadot)