Chattanooga, Tenn. - Thousands of military veterans across the South are waiting to find out if they were exposed to infectious diseases by government clinics that performed colonoscopies and other procedures with equipment that wasn't properly sterilized. Veterans Affairs officials won't say if mistakes that may have exposed patients to infections at medical centers in Tennessee and Florida and a clinic in Georgia have been discovered elsewhere. The VA recently warned veterans who had colonoscopies as far back as five years ago at its hospitals in Murfreesboro, Tenn., and Miami that they may have been exposed to the body fluids...