MARYLAND HEIGHTS, MO (KTVI - FOX2now.com) - It has been three years since the " Missouri Miracle." Shawn Hornbeck was found alive in a Kirkwood apartment three years ago Tuesday after being missing for four years. Shawn disappeared when he was 11 years old while riding a bike in Richwoods, Missouri. Shawn will turn 19 this summer. He is now reaching out over the internet.

His message encouraging children to speak up when someone puts them in an uncomfortable situation is posted on the Hornbeck Foundation's website.

Shawn say in the message, "I'm Shawn Hornbeck. When I was 11 years old, I was riding my bike near my home when I was kidnapped by a stranger. I was held captive for 4 1/2 years. If you see something, say something. Reach out to someone. There's always someone willing to help, and no matter where you are, be aware of your surroundings.

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Despite being held captive for more than 1,500 days, Shawn made spectacular progress with his schooling. On the foundation's website, his parents say he made up the four years of school he missed in such short order, that he will graduate with his class on time.