Richard Kirchmann, 45, was last seen on July 5, 1996, in Sylmar, California. Employed as a truck driver for a Los Angeles brewing company, he told a co-worker he planned to travel to St. Louis for a few days but it is unclear whether he ever arrived. He packed personal belongings before leaving and never returned.

A week after his disappearance, his car was found abandoned at Ontario International Airport in California, but there was no evidence he boarded a flight. At the time he may have been in the early stages of dementia, prompting investigators to consider that he could be living as a John Doe patient in a hospital and not recognize his own identity. The case remains unsolved and is under active review.

Anyone who knew Richard, saw him around July 1996, or has information that might help investigators is asked to contact the Los Angeles Police Department.