Vicksburg police Capt. Mark Culbertson, 54, laughs after Nichelle Smith, grant coordinator with the Vicksburg Police Department, says a few words during a retirement ceremony for Culbertson in the Municipal Courtroom at police headquarters Thursday afternoon. Culbertson retired as chief of patrol for the Vicksburg Police Department after 33 years on the force. He said he is changing careers, moving Monday to a position as an anti-terror threat assessment investigator with the U.S. Army Corps of Engineers. (Meredith Spencer*The Vicksburg Post)