Warren County Commissioners will get their first look at revised safety and health rules for county employees this month. This year’s employee handbook will include a provision for firearms.“With the guns in trunks legislation going into effect this year, I thought we should add something in the handbook about it,” said safety coordinator David Britton. “Firearms should not be out and visible.”Tennessee’s “guns in parking lots” law took effect July 1 and gave handgun carry permit holders the right to transport and store firearms and/ or ammunition in their vehicles parked in an employer’s parking lot.