CANNON FALLS — Growing up, Gavin Johnson took frequent trips to the University of Wisconsin-Stout with his dad. At the time, his dad, Jesse, was a professor of Military Science and Johnson would tag along on trips to campus. The pair went back to Menomonie again last September. This time, Johnson was a senior entering his final season at Cannon Falls on a visit with the Blue Devils’ men’s basketball team. “He did a lot of stuff with the ROTC pro…