Here's a story about children who were lost and children who were found.

It involves a family that went through an almost unimaginable shock.

It's not a story this family likes to revisit.

It's hard for me to talk about, you know, the past.

It hurts, to be honest with you.

It hurts a lot.

That is Ahmed, who asked that we not use his last name because, due to what you're about

to hear, he's concerned about the security of his family.

Ahmed and his wife were born in Morocco.

They moved to the United States in the late 1990s.

They became U.S. citizens, had kids.

And a decade ago, in 2015, they traveled with their family to Morocco to visit

relatives. During that trip, their 18-year-old son, Abdel Hamid, disappeared.

We just woke up in the morning, and then Abdel was not there, so we looked for him everywhere,

and the house. We went from room to room from floor to floor.

We couldn't find him. They searched hospitals and police precincts. I was thinking that he left

the house, you know, going for a walk or something, and attacked or something like that. So

auto accident.

Eventually, the police told them there was a way to check if their son was still in Morocco.

Moroccan police told us that when a kid or a young man leaving without telling their parents their destination, I guarantee he went there to join some radical groups or

something like that. The police were correct. Their teenage son had joined a terrorist organization.

Their oldest boy, an American citizen who'd grown up in the suburbs of Minneapolis and gone

...