WAYCROSS, Ga. - A group of third-graders plotted to attack their teacher, bringing a broken steak knife, handcuffs, duct tape and other items for the job and assigning children tasks including covering the windows and cleaning up afterward, police said Tuesday. The plot by as many as nine boys and girls at Center Elementary School in south Georgia was a serious threat, Waycross Police Chief Tony Tanner said. "We did not hear anybody say they intended to kill her, but could they have accidentally killed her? Absolutely," Tanner said. "We feel like if they weren't interrupted, there would have been...