In today's WBFO Brief, the candidates for Buffalo mayor face off in their first debate, even as the Erie County Board of Elections holds off on certifying the November ballot with legal challenges still in play.Also, a joint law enforcement effort against violent crime is extended into October; Erie County lawmakers pass legislation allowing children as young as 12 to use firearms while hunting deer; Three Buffalo sites are among 19 nominated for preservation by the State Board of Historic Preservation; On the eve of the 20th anniversary of the 9/11 terror attacks, we explore how teachers present the event to students, and hear from the man known as "America's Police Chief" about counter-terrorism; Plus, Peter Hall and Anthony Chase bring us this week's edition of Theater Talk.