Members of the Philippine National Police Explosive Ordnance Division assist their colleague wearing a bomb suit as they conduct a bomb disposal scenario to show their preparation for the security in the upcoming 31st Association of Southeast Asian Nations Summit in Pasay city, the Philippines, on Nov 7, 2017. [Photo/Xinhua]

A member of the Philippine National Police Explosive Ordnance Division wearing a bomb suit conducts a bomb disposal scenario to show their preparation for the security in the upcoming 31st Association of Southeast Asian Nations Summit in Pasay city, the Philippines, on Nov 7, 2017. [Photo/Xinhua]

A member of the Philippine National Police Explosive Ordnance Division wearing a bomb suit conducts a bomb disposal scenario to show their preparation for the security in the upcoming 31st Association of Southeast Asian Nations Summit in Pasay city, the Philippines, on Nov 7, 2017. [Photo/Xinhua]

A member of the Philippine National Police Explosive Ordnance Division wearing a bomb suit conducts a bomb disposal scenario to show their preparation for the security in the upcoming 31st Association of Southeast Asian Nations Summit in Pasay city, the Philippines, on Nov 7, 2017. [Photo/Xinhua]

A member of the Philippine National Police Explosive Ordnance Division wearing a bomb suit conducts a bomb disposal scenario to show their preparation for the security in the upcoming 31st Association of Southeast Asian Nations Summit in Pasay city, the Philippines, on Nov 7, 2017. [Photo/Xinhua]

A member of the Philippine National Police Explosive Ordnance Division wearing a bomb suit conducts a bomb disposal scenario to show their preparation for the security in the upcoming 31st Association of Southeast Asian Nations Summit in Pasay city, the Philippines, on Nov 7, 2017. [Photo/Xinhua]