. >>> still ahead a somber anniy ivors columbine high school shooting are honoring those who lost their lives, how wel ow u the g that.li devastation. >>> all that plus a windy saturday and there are major changes ahead for the work week coming up. we will document them in the forecast coming up. >>> it was the school shooting that shot the nation before attacks became a seemingly routine. 12 students and a teacher were killed at colorado's columbine high school 20 years ago. the high school south of denver was ambushed by a pair of students with guns and homemade bombs. the 2 eventually killed themselves. images of students running from their lives were broadcast nationwide. many of the survivors use their traumatic experience as a way to help others. they say, even 20 years later, they will never forget. >> i did not understand and i had no concept of someone shooting at me, particularly in school. >> it was horrible it dominated my life for a long time. i still have a beautiful family and i have a life i was able to rebuild from that. >> last night survivors brought their children to