On June 7, 2009, right smack in the middle of Chattanooga's huge annual two week music-fest, "Riverbend", a thousand or so people chose to ignore the teeming masses down by the river watching Three Dog Night for another venue. A man who hasn't had a song on country radio in 5 years was giving a benefit concert for the local firefighter's association at the Soldiers & Sailor's Memorial Auditorium in downtown Chattanooga, TN. But, it wasn't just any old has-been singer. No sir, this concert was being put on by Mr. Joe Diffie, Opry member, owner of 5 number one country singles, 2 platinum...