Philippine troops fire their 105mm howitzer cannons towards enemy positions from their base near Butig town in Lanao del Sur province on the southern island of Mindanao on November 27, 2016. Troops on November 27 fired artillery at positions held by an Islamic militant faction in the southern Philippines as more soldiers deployed against the group, which staged a deadly bombing in President Rodrigo Duterte's home city. / AFP PHOTO / RICHEL UMEL