Afghans say commando unit was attacked before airstrike was called on Pakistan
http://www.washingtonpost.com/world/...y.html?hpid=z1
"............Both sides said they believed they were attacking insurgents along the border. A senior Pakistani defense official acknowledged that Pakistani troops fired first, sending a flare, followed by mortar and machine-gun fire, toward what he said was “suspicious activity” in the brush-covered area below their high-altitude outpost barely 500 yards from the border......................"