An F-16 Fighting Falcon flies past the tower at Hardwood Range, near Finley, Wis., during the 2016 Northern Lightning Exercise at Volk Field Air National Guard Base, Camp Douglas, Wis., Aug. 31, 2016. More than 1,000 service members and both fourth and fifth generation aircraft had the opportunity to train together during the two-week exercise. (U.S. Air National Guard photo by Staff Sgt. Andrea F. Rhode)