CHAPEL HILL: As sirens blared across the University of North Carolina at Chapel Hill and cell phones lit up with alerts of an active shooter, Micah Baldonado cried quietly at his desk while his teacher proceeded with the lecture. "I know there's no right way to react, but I just lost it," he said. "I couldn't hold back tears. My teacher actually kept teaching for maybe 30 minutes even after receiving alerts of an active shooter." The senior from Charlotte said rumors spread quickly across campus during a...