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. Tom Mauser says his son Daniel was a lot like him, he was a bit nerdy. He was also really brave. He knew he was shy and not very athletic. Even so, he chose to face his fears and take on two unlikely challenges. 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.