http://www.boston.com/news/world/asia/articles/2006/04/20/pakistan_struggles_to_stop_afghan_heroin/QUETTA, Pakistan --A small airplane with a heat-seeing camera flies over moonlit, craggy desert along the Pakistan-Afghan frontier, circling suspicious convoys of vehicles that appear with amazing clarity on a monochrome screen.
In an effort to improve border security and stanch the flow of heroin trafficked from top world producer Afghanistan, the U.S. has supplied Pakistan with 10 Huey helicopters and three Cessna Caravan planes with high-tech surveillance equipment.
But a chronic shortage of dedicated ground forces to pounce on smugglers limits their impact. And rampant corruption that a former Afghan trafficker says infects security forces and officials on both sides of the border helps fuel the booming narcotics trade to Pakistan, across Europe and the United States.
The war on drugs plays second fiddle to the war on terror along Pakistan's border and draws little foreign funding, though this is a key route for narcotics coming from Afghanistan, which grew enough opium last year to refine about 450 tons of heroin.