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.

Designed and developed by Lockheed, the F-117 was the first operational aircraft conceived with stealth technology. It first flew on June 18, 1981, but was not officially acknowledged until 1988, when the Pentagon released a grainy, unrevealing photograph to the media (the aircraft itself was not seen by the public until 1990). With no afterburners and a shape designed to deflect radar signals, the F-117 is subsonic but effective. It has an automated planning system, sophisticated navigation and infrared target acquisition. It has been used several times in combat, most notably during the Persian Gulf War. It was retired in 2008, replaced by the more formidable F-22.

Info: F-117A Nighthawk - USAF Dark Knights, #84-0828, Tonopah Test Range, NV, Nighthawk 40th Anniversary 2022