Christopher Cole Thomas, 22, vanished on Nov. 25, 2016, when he suddenly stopped his car and jumped out.
READ MORE: In Benson, search continues for missing Florida man
Thursday, 30 officers from several agencies conducted a search using a K-9. The State Bureau of Investigation searched the area from a helicopter.
The Thomas family, in collaboration with the CUE Center for Missing Persons, is offering a $10,000 reward for information on his whereabouts.
RELATED: $10,000 reward offered in search for missing son
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