Oliver Monroe Smith was 81 when he stepped into his backyard in the Oakland Park neighborhood of Columbus, Georgia, on the morning of April 10, 1996, saying he planned to plant zinnias. He was wearing work clothes and his eyeglasses and left his wallet on the kitchen table; he never returned and was never heard from again.

A retired Army colonel, Smith and his wife Orba were reportedly in good physical and mental health and were looking forward to a cruise with the local Retired Officers Association. Despite searches and official investigations, no trace of him was ever found and the case remains unsolved; Orba died in 2006 without learning what happened to her husband.

What details about that morning or the neighborhood might someone remember that could still help explain his disappearance?