garrison and security troops. The Tarnak Farm incident occurred on 18 April 2002, when an American F-16 jet dropped a laser-guided bomb on a group of soldiers from the 3rd Battalion PPCLI Battle Group. The soldiers were conducting night-time training on a designated live-fire range, but the American pilots mistook their gunfire for a Taliban insurgent attack. The friendly fire incident killed four Canadians and wounded eight. Their deaths were the first Canadian deaths in Afghanistan, and the first in a combat zone since the Korean War. 2003–2005: Operation Athena In August 2003, the Canadian Forces moved to the northern city of Kabul where it became the commanding station of the newly formed International Security Assistance Force (ISAF). Canada dubbed this Operation Athena and a 1,900-strong Canadian task force provided assistance for improving civilian infrastructure, such as well-digging and repair of local buildings. In March 2004, Canada committed $250 million in aid to Afghanistan and $5 million to support the 2004 Afghan election. On 13 February 2005, Defence Minister Bill Graham announced Canada was doubling the number of troops in Afghanistan by the coming summer, from 600 troops in Kabul to 1200. In spring 2005, officials announced that the Canadian Forces would return to the volatile Kandahar Province, taking command of the region from US forces. Stage one of Operation Athena ended in December 2005 with the fulfillment of the stated aim of "rebuilding the democratic process" in Afghanistan. 2006: Operation Archer Operation Archer followed Athena beginning in February 2006. Unlike the ISAF-led Athena, Archer was part of the US military command. By spring 2006, Canada had a major role in southern Afghanistan, with a battle group of 2,300 soldiers based at Kandahar. Canada also commanded the multinational brigade for Regional Command South, a main military force in the region, with Canadian Brigadier-General David Fraser formally taking over from US forces on 28 February. In May 2006, the Canadian government extended Canadian military commitments to Afghanistan by two years, replacing earlier plans to withdraw soldiers in 2006. Foreign Affairs Canada stated that the commitment would employ a "whole of government approach", in which the Provincial Reconstruction Team (PRT), utilizing personnel from the military, Foreign Affairs, the Canadian International Development Agency and the Royal Canadian Mounted Police (RCMP), would provide a dual role of security as well as reconstruction of the country and political structure. On 31 July 2006, the NATO-led