This author is lying. There were all kinds of reports in all media about this shooting.
This is from MSN: http://now.msn.com/armed-guard-stops-atlanta-middle-school-shooter.
The guard did not "take down" the shooter if that means he killed him, but he did disarm him after he shot another kid in the neck. The victim is doing OK in the hospital and may have been discharged already. I don't know why this author would want to say there were no reports in the media, unless he just wants to --what? There have been so many shootings lately people lose track, and like this author only remember the ones he wants.