Sentry Savannah is the ANG’s largest fourth and fifth generation counter-air exercise designed for units from across the U.S. to do ground training, offensive/defensive counter-air missions, cruise-missile defense and weapon-drop training on the range. The most noticeable aircraft was F-117A 84-0828 from the “Dark Knights” at the Tonopah Test Range. The F-117 was officially retired in 2008 but 84-0828 has been operating at the Tonopah Test Range since 2020. The aircraft wears a logo “40 Years of Owning the Night” marking the 40th anniversary of the first flight of the F-117.