Young was last seen in San Luis Obispo County, California on April 28, 2010. He left for a camping trip at Plaskett Creek Campground in the Los Padres National Forest and was expected to return a few days later, but never did.

Laan was last seen on November 26, 1982. His father dropped him off at Toland Road at noon so he could go on a hiking trip in the Los Padres National Forest in California. Laan never returned from the hike. He has never been heard from again.