At Chattanooga's Manufacturing Repair and Overstock, Inc. - or MRO, for short - a growing crew of nearly 30 people receives, inspects and fixes automated industrial parts from across the country.

We all make mistakes, and there’s no shame in having to bodge a printed circuit board to fix a mistake. Most of us are content with cutting a trace or two with an Xacto or adding a bit of jumper wire ...