AP Exclusive: U.S. forces set up base in Afghan mountains for al-Qaida hunt ON THE AFGHAN BORDER (AP ) -- Using bulldozers to slice bunkers and a helicopter landing pad out of a mountainside, U.S. special operations forces dug in on a peak overlooking Pakistan - fortifying the area for the intensifying battle against al-Qaida and Taliban forces. Special operations forces - including the Army's Green Berets, the Navy SEALs, and CIA operatives - are playing a secretive but leading role in the battle against al-Qaida and Taliban suspects believed to be hiding out in the mountains of Pakistan's...