CUMMING — Forsyth County’s clerk of courts said it was business as usual in the courthouse Monday, three days after an armed man attempted to storm the building in a hail of gunfire. “It was a little surreal, but everyone seems to be doing pretty well today,” Greg Allen said. He added the grand jury started its session Monday morning; however, trial jurors were told not to come to court until today. “(We) weren’t sure if the courthouse was going to be ready,” Allen said. “... We just delayed it a day to give us time and make sure everything was OK.” The gunman, 48-year-old Dennis Ronald Marx of Cumming, was shot and killed in the attack by Forsyth County sheriff’s deputies, who engaged him outside the courthouse.