AP Enterprise: Philippines Using US Smart Bombs Concealed by the night sky, the two aging Philippine air force planes unleashed a surprise high-tech weapon: U.S. satellite-guided bombs that whizzed down with deadly precision toward a long-elusive terrorist suspect and two other top radicals dozing with their men in Jolo Island's jungle. The use of smart bombs, confirmed to The Associated Press by four senior Philippine security officials, marks a new chapter in the long-running battle against an al-Qaida-linked movement in the southern Philippines, viewed by the U.S. as a key front in the global effort to keep terrorists at bay. Successive blasts shattered a hillside rebel encampment of Abu Sayyaf, which remains one of Southeast Asia's most violent groups despite a decade of battle losses. The Vietnam War-era turboprops roared away after delivering a bull's-eye hit near mountainous Parang town around 3 a.m. on Feb. 2. Thermal imaging from a U.S. drone, described by two of the senior officials, depicted the aftermath: Several slain gunmen lay amid a clutter of destroyed trees, huts and tents, while survivors pulled away the dead and wounded in the pitch darkness. Although it remains unclear whether all three of the most-wanted terrorists were killed, the introduction of smart bombs reflects shifting battlefields and strategies. FILE - In this Feb. 2, 2012 file photo, Philippine National Police Special Action Forces and SOCO (Scene of the Crime Operatives) investigators examine the site on the island province of Jolo in southern Philippines where three most wanted leaders of the al-Qaida-linked terrorist groups Abu Sayyaf and Jemaah Islamiyah were killed in a U.S.-backed dawn airstrike in Jolo, Philippines. The two aging Philippine air force planes unleashed a surprise high-tech weapon: U.S. satellite-guided bombs in the attack. The U.S. has been assisting the Philippine military since shortly after the Sept. 11 attacks, providing advice, training, and intelligence, including drone surveillance, but the smart bombs are the first major high-tech hardware supplied to the Philippines. They offer a less manpower-intensive way to combat Abu Sayyaf at a time when both the Philippines and the U.S. militaries want to focus resources on tensions with China in the South China Sea. They also dovetail with a change in recent years from massive offensives to surgical, intelligence-driven strikes that target holdouts of the battered Abu Sayyaf. The four senior officials said the strike on the Abu Sayyaf lair employed GPS-guided bombs, a previously unavailable technology acquired from the United States under a confidential military assistance project. They spoke on condition of anonymity because they aren't authorized to discuss those details with the media. A Philippine military document detailing the project, a copy of which was seen by the AP, said that U.S. defense contractor Raytheon Co. was to deliver 22 kits last year to convert conventional bombs into precision-guided munitions that could be launched from the OV-10 turboprop. Accompanying that was crew training, equipment upgrades to allow the OV-10s to deploy the bombs and two test runs. A military spokesman, Col. Arnulfo Marcelo Burgos, said the Armed Forces of the Philippines "neither confirms nor denies the existence of such munitions citing operational security reasons. However, its pilots have been training vigorously to further improve their proficiency particularly in the precise delivery of munitions to its identified target. Many Western, Middle Eastern and Asian countries have acquired smart bombs since they were first widely used by the U.S.-led coalition in the 1990-91 Gulf War. They have guidance kits and fins and use the U.S. GPS satellite system, laser and other technologies to zero in on targets.