Students wearing hard hats participate in the Nationwide Simultaneous Earthquake Drill in Quezon City, the Philippines, June 20, 2019. The Philippine National Disaster Risk Reduction and Management Council organized the earthquake drill to test the readiness of rescuers in case of disasters. (Xinhua/Rouelle Umali)

Students wearing hard hats participate in the Nationwide Simultaneous Earthquake Drill in Quezon City, the Philippines, June 20, 2019. The Philippine National Disaster Risk Reduction and Management Council organized the earthquake drill to test the readiness of rescuers in case of disasters. (Xinhua/Rouelle Umali)

Students wearing hard hats participate in the Nationwide Simultaneous Earthquake Drill in Quezon City, the Philippines, June 20, 2019. The Philippine National Disaster Risk Reduction and Management Council organized the earthquake drill to test the readiness of rescuers in case of disasters. (Xinhua/Rouelle Umali)

Students wearing hard hats participate in the Nationwide Simultaneous Earthquake Drill in Quezon City, the Philippines, June 20, 2019. The Philippine National Disaster Risk Reduction and Management Council organized the earthquake drill to test the readiness of rescuers in case of disasters. (Xinhua/Rouelle Umali)

Students wearing hard hats participate in the Nationwide Simultaneous Earthquake Drill in Quezon City, the Philippines, June 20, 2019. The Philippine National Disaster Risk Reduction and Management Council organized the earthquake drill to test the readiness of rescuers in case of disasters. (Xinhua/Rouelle Umali)

Students wearing hard hats participate in the Nationwide Simultaneous Earthquake Drill in Quezon City, the Philippines, June 20, 2019. The Philippine National Disaster Risk Reduction and Management Council organized the earthquake drill to test the readiness of rescuers in case of disasters. (Xinhua/Rouelle Umali)

Students wearing hard hats participate in the Nationwide Simultaneous Earthquake Drill in Quezon City, the Philippines, June 20, 2019. The Philippine National Disaster Risk Reduction and Management Council organized the earthquake drill to test the readiness of rescuers in case of disasters. (Xinhua/Rouelle Umali)

Students wearing hard hats participate in the Nationwide Simultaneous Earthquake Drill in Quezon City, the Philippines, June 20, 2019. The Philippine National Disaster Risk Reduction and Management Council organized the earthquake drill to test the readiness of rescuers in case of disasters. (Xinhua/Rouelle Umali)

Students wearing hard hats participate in the Nationwide Simultaneous Earthquake Drill in Quezon City, the Philippines, June 20, 2019. The Philippine National Disaster Risk Reduction and Management Council organized the earthquake drill to test the readiness of rescuers in case of disasters. (Xinhua/Rouelle Umali)