The Union County Sheriff's Office is mourning the loss of one of its own.
18-year-old Andrew Davidson was part of the department's Explorer program and was training to become a reserve deputy.
He was heading home from work around 2:30 Wednesday morning when his motorcycle crossed the center line in a curve on Maynardville Highway and hit a tractor trailer. Troopers say Davidson was driving too fast.
The truck driver was not hurt.
Troopers say no charges will be filed.