DE LEON SPRINGS, Fla.--(BUSINESS WIRE)--Sparton Corporation (NYSE: SPA) technology will be on display at the upcoming Defense Advanced Research Projects Agency (DARPA) “Wait, What Conference” being held in St. Louis on September 9 – 11, 2015. DARPA’s Wait, What Conference: “is a forum on future technologies … on their potential to radically change how we live and work, and on the opportunities and challenges these technologies will raise within the broadly defined domain of national security” T