By Ansley Haman
Chattanooga Times Free Press
The Hamilton County Sheriff's Office soon will have an underwater robot to comb waterways for discarded weapons, missing persons, and explosive devices.
A $110,794 grant from the U.S. Department of Homeland Security will allow the sheriff's department to buy a submersible that can take photographs and recover items up to 90 pounds from as deep as 250 feet.
Tenn. sheriff's robot at home in water