William Elmer Chism, 65, was last seen May 5, 1980, in Los Angeles after a visit to a VA hospital and never returned home. His ex-wife attempted to file a missing person report the same day but was unable to do so for reasons that remain unclear.

No official missing report was filed until December 2011, when his son reported him missing more than three decades after his disappearance.

If anyone knew William, saw him around May 1980, or has information that could help explain where he went after leaving the VA hospital, please share what you know with the LAPD.