“In God we trust. All others must have data.”When Ed Grimm took the helm of Southern Towing Company (STC)as President and CEO, he inherited an enviable team of leaders, engineers, mentors, communicators and analysts. Today STC is a clear leader on the inland waterways, pioneering and proving the business and safety value of Z-Drives on the river towboats.How did you come to the top spot at Southern Towing Company…