WASHINGTON, July 3 -- The U.S. Air Force issued the following news: * * * Tennessee Guard participates in Bulgaria's Best Warrior Competition * VELIKO TARNOVO, Bulgaria (AFNS) -- Members of the Tennessee Army and Air National Guard competed in the Bulgarian Armed Forces' first multinational Best Warrior Competition held at the Vasil Levski National Military University, June 23-26.  The competition featured 12, five-member teams representing various military units to include the Bulgarian   more