He stepped on board a train and that was the last anyone has seen him. San Antonio police say 79-year-old Andrew Haukereid boarded an Amtrak train last week but hasn't been seen since.
Haukereid's family were waiting for him to arrive in Chicago, but he never showed up.
Amtrak employees say they last remember seeing the man at a stop in Arkansas.
It is believed he may be in the St. Louis area. They are continuing their search.