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Schoolchildren from the Corazon Aquino Elementary School participate in a nationwide simultaneous earthquake drill in Manila on June 29, 2017. The nationwide drill is part of the Philippine government's disaster preparedness programme and is held quarterly. / AFP PHOTO / NOEL CELIS (Photo credit should read NOEL CELIS/AFP/Getty Images)

Schoolchildren from the Corazon Aquino Elementary School participate in a nationwide simultaneous earthquake drill in Manila on June 29, 2017. 
The nationwide drill is part of the Philippine government's disaster preparedness programme and is held quarterly.  / AFP PHOTO / NOEL CELIS        (Photo credit should read NOEL CELIS/AFP/Getty Images)