NBC’s Dateline recently aired “On the Brink,” a 3-year chronicle of two New York-based young adults with autism and the emotional journeys their families have endured. As they transition from graduation to adulthood, they make a leap towards the unexpected future.

This report puts a spotlight on autism’s “aging out” crisis. “On the Brink” presents a deeper look at the lives of young adults with autism and the measures parents must take to provide their children with specialized services and a better future when they turn 21. Both families featured in this episode fight to help their children and revolutionize the way autism is perceived in the U.S.

Watch a preview of “On the Brink” or the FULL episode here.