Saturday marks 25 years since the mass shooting at Columbine -- a shooting that took the lives of 12 students and one teacher. Recently, we sat down with a number of the families of the victims to get their perspective on the passage of time. Coni Sanders says her dad, Dave Sanders, loved being a dad, but really loved being a grandpa. And he loved coaching, softball and basketball. She says sometimes she thinks he became a teacher, just to get the chance to coach. She knows her dad saved dozens if not hundreds of lives the day he died. More local videos here: https://bit.ly/2Pa0d1l Subscribe to NEXT: http://bit.ly/2eP1GwI Stay connected: 9NEWS Website: http://www.9news.com/ Facebook: https://www.facebook.com/ilike9news Twitter: https://twitter.com/9NEWS Instagram: https://www.instagram.com/9newsdenver/ Download the 9NEWS App: https://www.9news.com/appredirect/ Sign up for the 9NEWSLETTER: https://www.9news.com/email 9NEWS (KUSA) is located in Denver, Colorado.