The Camp Chapman attack was a suicide attack by Humam Khalil Abu-Mulal al-Balawi against the Central Intelligence Agency facility inside Forward Operating Base Chapman on December 30, 2009. One of the main tasks of the CIA personnel stationed at the base was to provide intelligence supporting drone attacks in Pakistan. Seven American CIA officers and contractors, an officer of Jordan's intelligence service, and an Afghan working for the CIA were killed when al-Balawi detonated a bomb sewn into a vest he was wearing. Six other American CIA officers were wounded. The bombing was the most lethal attack against the CIA in more than 25 years. Al-Balawi was a Jordanian doctor and jihadist website writer who was detained and interrogated over three days by the Jordanian intelligence service, the General Intelligence Directorate (GID). The GID and the CIA thought they had turned al-Balawi to penetrate al-Qaeda in the Pakistani tribal areas to provide intelligence for high-level targets. Instead, al-Balawi used this trust to gain access to the CIA base in Afghanistan unsearched and perpetrate the attack. Al-Qaeda and Tehrik-i-Taliban Pakistan claimed responsibility, saying they helped al-Balawi with the attack. Attack On December 30, 2009, Humam Khalil Abu-Mulal al-Balawi was picked up by Arghawan, an Afghan who was the chief of external security at Camp Chapman, at the border between Miranshah, Pakistan, and Khost, Afghanistan. Arghawan drove al-Balawi to Camp Chapman, arriving around 4:30p.m. The car was waved through three security checkpoints without stopping before arriving at its destination well within the base. Sixteen people were waiting for the car near a building set up to debrief al-Balawi. Al-Balawi got out of the vehicle and detonated the explosives hidden in his suicide vest. Al-Balawi and nine other people were killed by the blast. Seven were CIA personnel: five officers, including the chief of the base, and two contractors. One was a Jordanian intelligence officer and another was the Afghan driver. Six other CIA personnel were seriously wounded in the attack, including the deputy chief of Kabul station. Some of those killed had already approached the bomber to search him, whereas others killed were standing some distance away. At least 13 intelligence officers were within of al-Balawi when the bomb went off. After the attack, the base was secured and 150 mostly Afghan workers were detained and held incommunicado for three days. The attack was a major setback for the intelligence agency's operations