Lori Baker with her husband, Erich. Baker is founder and executive director of the International Consortium for Forensic Identification, Reuniting Families Project. StoryCorps hide caption

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Migrants arrive at a rest stop in Ixtepec, Mexico, after a 15-hour ride atop a freight train headed north toward the U.S. border on Aug. 4. Thousands of migrants ride atop the trains, known as La Bestia, or The Beast, during their long and perilous journey through Mexico to the U.S. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images