Oregon Air National Guard F-15s train in Arizona
U.S. Air Force Staff Sgt. Joseph Schlotthauer, 173rd Fighter Wing F-15 Crew Chiefs, preflights an F-15 Eagle in preperation for a training flight at Tucson, Arizona January 12, 2017. The 173rd Fighter Wing spent two weeks training with the 162nd Wing, Airzona Air National Guard, flying dissimilar air combat training with their F-16s. (U.S. Air National Guard photo by Master Sgt. Jennifer Shirar)