Cesar Arevalo, a 33-year-old Salvadorean professional rescuer who worked in the recovery of bodies after the 7.1 earthquake that hit Mexico on September 19, poses for pictures in Mexico City on September 25, 2017. What struck Arevalo the most was "the children involved in this tragedy." 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