COVINGTON, La. (AP) — Authorities in suburban New Orleans said Friday they uncovered a plot by three teenagers for “an incredible and devastating” attack at their high school during the first day of classes, with plans for two specific targets, indiscriminate shooting and suicide.The 15-year-old boys, who called themselves Day Zero, identified a student and a faculty member whom they planned to kill, Sheriff Jack Strain said in a conference call with reporters Friday. They also planned indiscriminate shooting, as well as firing at any sheriff’s deputies or other officers they saw and taking their weapons, said Capt. George Bonnett, a spokesman for the sheriff.“Like many other cases similar to this, they fully intended to end this episode with taking their own lives,” the sheriff said.Schools start Monday in St. Tammany Parish. Schools Superintendent Trey Folse said other students at Lakeshore High School told school officials about the plan July 17, and the officials immediately notified him and the sheriff’s office.“These kids ... were planning to carry out an incredible and devastating attack on a school.