New occupant for ancient Afghan fortress [audio 6min]

Afghans call it Bala Haizar, or simply "The Castle." Legend has it, the fortress towering above the village of Qalat was built 2,000 years ago by Alexander the Great during his push into India. Since then, nearly every passing or invading army has used it -- the British, the Russians, the Taliban and now the Americans. JJ Sutherland reports.