ABC 20/20 revisits Jacob Wetterling kidnapping case

Aaron Larson was present when a masked man kidnapped Jacob Wetterling in 1989.

Jacob Wetterling was kidnapped and murdered at age 11 while biking with his brother Trevor and friend Aaron Larson.

Aaron Larson now lives in southwest Minnesota with two children.

Larson was called by Patty and Jerry Wetterling in 2015 before Danny Heinrich's arrest was announced.

Larson continues to relive the night of the abduction, which shaped who he is.