Pakistan says its military fired on U.S. aircraft 'violating' its airspace
According to Pakistani intelligence officials, at midnight last night, two United States military helicopters entered Pakistani airspace and were fired on by local troops, a second such event to occur this week. Pakistani officials call the incident a "violation" of its airspace. The helicopters, suspected of chasing militants, reportedly left the North Waziristan tribal region they had entered and retreated to Afghanistan without returning fire. Pakistani troops have been given orders to open fire at any foreign troops crossing the border.
Source: Wikinews