The Tennessee Highway Patrol has announced the promotion of Smithville native Charlie Caplinger to the rank of Sergeant.Caplinger serves in the THP’s Nashville District as a road sergeant in Robertson County.He has served as a trooper in that district since he was commissioned in 2002.Caplinger started his THP career in Robertson County as a commercial vehicle enforcement officer.He was transferred to Wilson County as a road trooper in 2004, and remained there until 2008 when he was transferred to the ACES (Alternative Commercial Enforcement Strategies) program under the Special Programs section.Caplinger serves on the Nashville district STRIKE team and has numerous commercial motor vehicle certifications including Level 1, Haz-Mat, Cargo Tanker, and Compliance Review.He has attended Northwestern University School of Police Personnel and was named Trooper of the year in 2010.