Ismael Villegas, an electric technician who volunteered as a so-called "Topo" (mole) -- as the diggers who burrow their way into collapsed buildings are known -- after the 7.1 earthquake that hit Mexico on September 19, poses for pictures in Mexico City on September 25, 2017. What struck Villegas the most was that after many trips to help in other countries, he is now helping in his own. A week after an earthquake that killed more than 300 people, a shaken Mexico was torn on September 26 between trying to get back to normal and keeping up an increasingly hopeless search for survivors. / AFP PHOTO / OMAR TORRES