A group of San Diego-based volunteers is scouring the desert to find people who've gone missing trying to cross the U.S. border.

It doesn't always end well for "Aguilas del Desierto," as the group occasionally finds human remains. But many times, the migrants are alive, though often sick or injured.

"Aguilas del Desierto" was started by Ely Ortiz, whose brother disappeared while trying to reach the U.S. Now, the group is made up of mostly blue-collar workers who try to bring closure to concerned families.

Since the 1990s, as many as 10,000 people have died trying to cross the border. If President Donald Trump's planned border wall gets built, experts believe migrants will be forced to take even more deadly routes.