MEXICO CITY—Brayan Martinez Juarez, 18, knew his parents would not let him crawl through collapsed and crumbling buildings to save victims of the magnitude-7.1 earthquake that struck Mexico City on Sept. 19.
It was a terribly dangerous thing to do, a type of bravery that has confounded Mexico City as authorities balance the effort to save those trapped under the mountains of rubble with the safety of those that would rescue them.
