Jeffrey Allen Coonradt was 27 and serving as an Army sergeant at Fort Ord, California, when he disappeared on December 20, 1987. He was last seen in Marina, California, near the base after a friend dropped him off. At the time he was wearing a turquoise and maroon pullover, blue jeans, and white Nike high-top sneakers.

Originally from New York, his family said the disappearance was out of character and foul play has been suspected. Investigators offered a reward and worked the case, but no significant leads developed and Coonradt has never been found. The case remains open.

If anyone was in Marina or around Fort Ord on December 20, 1987 and remembers seeing Jeffrey or anything unusual, can you share what you know?