Rocked gently on his mother's knees, a fly on his nose, a baby sleeps fitfully in a tent in the barren Torkham border camp as his family prepares to leave the waypoint to rebuild their lives in Afghanistan. In the transit camp, where returnees driven out of Pakistan sweat in burning heat during the day and shiver through the night, many of the blue tents at the foot of rocky mountains standing stark against a cloudless sky have already emptied. IMAGES AND SOUNDBITES ARRANGED IN SEQUENCES