From The Washington Post:
The fighting lasted less than two hours, ending by about 8:30Â p.m. No U.S. troops were killed. A spokesman for the Paktika governor said that 50 to 60 insurgents were killed.
The U.S. outpost has become a favorite target for Haqqani network insurgents based in Pakistan, who exploit the porous border to attack Americans. It was at least the third major attack on the base in a little more than a year.