http://www.nytimes.com/2008/09/26/world/asia/26military.html?_r=2&em&oref=slogin&oref=slogin
Pakistani and American Troops Exchange Fire
NY Times
Published: September 25, 2008
WASHINGTON — Pakistani and American ground troops exchanged fire along the border with Afghanistan on Thursday after the Pakistanis shot at two American helicopters, ratcheting up tensions as the United States increases its attacks against militants from Al Qaeda and the Taliban, who are being sheltered in Pakistan’s restive tribal areas.
The two American OH-58 Kiowa reconnaissance helicopters were not damaged and no casualties were reported on either side from the ground fire. But American and Pakistani officials agreed on little else about what happened in the fleeting mid-afternoon clash between the allied troops.
American and NATO officials said that the two helicopters were flying about one mile inside Afghan air space to protect an American and Afghan patrol on the ground when the aircraft were fired on by small-caliber arms fire from a Pakistani military checkpoint near Tanai district in Khost Province.
In response, the American ground troops shot short bursts of warning fire, which hit well shy of the rocky, hilltop checkpoint, and the Pakistanis fired back, said Rear Adm. Gregory Smith, a spokesman for the Central Command. [...]
But a spokesman for the Pakistani army, Maj. Gen. Athar Abbas, said Pakistani forces fired warning shots at the American aircraft after they crossed into Pakistan’s territory in the area of Saidgai, in North Waziristan’s Ghulam Khan region. “On this, the helicopters returned fire and flew back,” General Abbas said.