the country. A senior Pakistani security official urged the United States to coordinate its response to the suicide attack with the Pakistani government, in order to avoid "unnecessary and further friction" to the alliance of both countries, while a U.S. State Department official said that the U.S. counter-terrorism efforts "are coordinated with foreign governments, including with Pakistan, as needed." Forward Operating Base Chapman Forward Operating Base Chapman is located at the site of a former Afghan army installation with an airstrip. The base is named for Sergeant First Class Nathan Chapman, the first U.S. soldier killed by enemy fire during the Afghanistan war. Chapman was killed while fighting alongside the CIA in 2002. FOB Chapman is located near Forward Operating Base Salerno, a military base used by U.S. special operations forces. The CIA's base at Camp Chapman was set up at the beginning of the U.S.-led offensive against al-Qaeda and the Afghan Taliban in 2001. It began as an improvised center for operations. A military base at the beginning, it was later transformed into a CIA base. Camp Chapman was also used as a base for the Khost Provincial Reconstruction Team, a military-led development group. In recent years, the base evolved into a major counter-terrorism hub of the CIA's paramilitary Special Activities Division, used for joint operation with U.S. special operations forces and Afghan allies. It also had a housing compound for U.S. intelligence officers. U.S. reaction Drone attacks in North Waziristan The United States responded to the attack by increasing its drone attacks against militants in Pakistan. Nearly every day after the CIA facility was attacked, the U.S. military conducted drone strikes aimed at leaders of the Haqqani network in North Waziristan. In the week after the attack, the U.S. military conducted five drone strikes, an unusually high number. However, U.S. counter-terrorism officials cautioned against linking these attacks to the bombing. After reports of drone strikes, Pakistan said it would not support the attacks in its territory, as they were counterproductive. In March 2010, the death of Hussein al-Yemeni in a drone strike was announced. Al-Yemeni was called a planner involved in the suicide bomb attack. On November 1, 2013, the CIA killed Hakimullah Mehsud in a drone strike in Danday Darpa Khel. Investigations and security measures U.S. officials said that the CIA conducted a review of intelligence supplied by al-Balawi, examining whether he supplied false information about U.S.