What makes this legal case unprecedented in the United States?

This case represents the first known instance in the United States where a parent has been charged with the crimes committed by their child, specifically related to a school shooting. Colin Gray allegedly purchased an assault rifle for his son who then used it in a school shooting. The case is significant because it could establish new legal precedent for parental responsibility regarding firearm access. While Mr. Gray is presumed innocent until proven guilty by a jury of his peers, this bail hearing is examining whether he poses a flight risk or danger to the community before his trial.