People visited the Columbine Memorial on Thursday, Feb. 15, 2018. Twelve Columbine High School students and a teacher lost their lives in the shooting April 20, 1999. Cyndi Swanwick, one of the memorial’s visitors on Thursday, placed flowers in remembrance of those who lost their lives that day, but was also there to honor the seventeen students that were shot and killed at Stoneman Douglas High School in Parkland, Florida on Wednesday, Feb.