Donald 'Deke' Slayton, one of NASA's Mercury Seven astronauts, had a passion for flying that extended throughout his life, even after being diagnosed with a brain tumor. In June 1993, as his health deteriorated, Deke resolved to fly one last time. However, he passed away in his sleep, yet shortly after, residents near John Wayne Airport in Southern California reported sightings of his red Williams Stinger performing low-level aerobatics. The aircraft, registered as N21X, was confirmed to belong to Deke, but it had been donated to a museum, with its engine removed for display. This led to confusion when Deke's wife received a letter from the airport, reprimanding him for breaking flying regulations. The mystery deepens as Deke had already passed away five hours before the reported flight, leaving no explanation for how his plane could have been seen in the skies.