25 years after the Columbine High School shooting, trauma lingers AxiosColumbine victims honored with day of service 9News.com KUSAColumbine victim’s sneakers forge a path for his father 25 years later FOX 31 DenverBiden marks 25th anniversary of Columbine shooting The HillOver 1000 Columbine community members volunteer for day of service 25 years after school shooting CBS News