FORT MAGSAYAY, Philippines — As an American reconnaissance drone hummed overhead, soldiers of the U.S. and Philippine armies stormed forward through the jungle terrain, laying down suppressive fire on enemy positions. Finishing off the foe’s stubborn resistance, a Kestrel first-person-view (FPV) drone carrying an explosive payload slammed into the enemy bunker. Afterwards, sweating profusely in the 97ºF heat, the Americans and Filipinos secured the area. This jungle patrol in the thickly