Four months ago, Kendrick Castillo was killed in the shooting at STEM School Highlands Ranch. He was involved in the school's robotics team and so was his dad, John Castillo.

“It's my first time back since our son lost his life, and I was the coach and lead mentor on the team,” John Castillo said on a visit with the team last week. “I want to see how they're doing and support them any way I can.”

Castillo spoke with Colorado Matters about his son’s death and the legacy Kendrick leaves behind, including the robot he helped fabricate and a robotics tournament. The Kendrick Castillo Memorial Tournament is Sept. 28 at East High School in Denver.

“It brings me joy knowing that he was a good leader and a hero for this school and the community,” he said. “When I look at the robot, it reminds me of him. I get emotional. Hopefully, these kids will pick up the torch and they'll live their life as Kendrick did and do great things with robotics and move into aerospace like he wanted to do.”