An Afghan National Policeman carries a PKM machine gun and rounds while on patrol with U.S. Army soldiers from Charlie Company, 1st Battalion, 17th Infantry Regiment of the 5th Stryker Brigade Thursday, May 20, 2010, in Afghanistan’s Kandahar province. (AP Photo/Julie Jacobson)

An Afghan National Policeman carries a PKM machine gun and rounds while on patrol with U.S. Army soldiers from Charlie Company, 1st Battalion, 17th Infantry Regiment of the 5th Stryker Brigade Thursday, May 20, 2010, in Afghanistan’s Kandahar province. (AP Photo/Julie Jacobson)

Internally displaced Afghan girls smile as they look out a small window of a shanty, in a refugee camp in Kabul, Afghanistan, Thursday, April 8, 2010. According to UNHCR some 2.7 million registered Afghans refugees still remain in Pakistan and Iran. (AP Photo/Dar Yasin)

Internally displaced Afghan girls smile as they look out a small window of a shanty, in a refugee camp in Kabul, Afghanistan, Thursday, April 8, 2010. According to UNHCR some 2.7 million registered Afghans refugees still remain in Pakistan and Iran. (AP Photo/Dar Yasin)

An internally displaced Afghan child smiles as he looks out from a small window of a shanty, in a refugee camp on a cold day in Kabul, Afghanistan, Thursday, Feb. 11, 2010 (AP Photo/Altaf Qadri)

An internally displaced Afghan child smiles as he looks out from a small window of a shanty, in a refugee camp on a cold day in Kabul, Afghanistan, Thursday, Feb. 11, 2010 (AP Photo/Altaf Qadri)

An Afghan girl peers out of her house in a village west of Lashkar Gah in Helmand province, southern Afghanistan, Thursday, Feb. 11, 2010. NATO forces and Afghan troops are conducting operations in the area against the Taliban. (AP Photo/Pier Paolo Cito)

An Afghan girl peers out of her house in a village west of Lashkar Gah in Helmand province, southern Afghanistan, Thursday, Feb. 11, 2010. NATO forces and Afghan troops are conducting operations in the area against the Taliban. (AP Photo/Pier Paolo Cito)

In this undated image made available by the Ministry of Defence in London, Wednesday Feb. 10, 2010, an Apache attack helicopter is inspected following operations in Helmand Province, Afghanistan. (AP Photo/Staff Sergeant Mark Jones, MOD, ho)

In this undated image made available by the Ministry of Defence in London, Wednesday Feb. 10, 2010, an Apache attack helicopter is inspected following operations in Helmand Province, Afghanistan. (AP Photo/Staff Sergeant Mark Jones, MOD, ho)

A decorated helmet is seen sitting alongside a Gatling M1-34 gun on a helicopter in Kandahar, southern Afghanistan Saturday, Jan. 23, 2010. (AP Photo/Kirsty Wigglesworth)

A decorated helmet is seen sitting alongside a Gatling M1-34 gun on a helicopter in Kandahar, southern Afghanistan Saturday, Jan. 23, 2010. (AP Photo/Kirsty Wigglesworth)

A Canadian soldier in a Light Armored Vehicle (LAV), is silhouetted during a patrol in Kandahar City, southern Afghanistan, Monday, Jan. 18, 2010. (AP Photo/Kirsty Wigglesworth)

A Canadian soldier in a Light Armored Vehicle (LAV), is silhouetted during a patrol in Kandahar City, southern Afghanistan, Monday, Jan. 18, 2010. (AP Photo/Kirsty Wigglesworth)

A man flees the area as a bomb in a vehicle explodes in Kabul, Afghanistan, in this image taken from TV Monday Jan. 18, 2010. Taliban militants struck the heart of the Afghan government in Kabul on Monday, prompting fierce gunbattles after a suicide bomber blew himself up near the presidential palace. More explosions rocked the capital as Afghan troops fought off the attackers. (AP Photo/Press TV, via APTN) Read more →

A man flees the area as a bomb in a vehicle explodes in Kabul, Afghanistan, in this image taken from TV Monday Jan. 18, 2010. Taliban militants struck the heart of the Afghan government in Kabul on Monday, prompting fierce gunbattles after a suicide bomber blew himself up near the presidential palace. More explosions rocked the capital as Afghan troops fought off the attackers. (AP Photo/Press TV, via APTN)

Read more →

French Foreign Legion troops at Tora Forward Operating Base, in Afghanistan, pay tribute during a ceremony on Monday, Dec. 14, 2009, to an Afghan soldier killed on Thursday, Dec. 10, by an IED, Improvised Explosive Device, during a joint NATO/Afghan patrol nearby. (AP Photo /Alfred de Montesquiou.)

French Foreign Legion troops at Tora Forward Operating Base, in Afghanistan, pay tribute during a ceremony on Monday, Dec. 14, 2009, to an Afghan soldier killed on Thursday, Dec. 10, by an IED, Improvised Explosive Device, during a joint NATO/Afghan patrol nearby. (AP Photo /Alfred de Montesquiou.)

Afghan police officers display rockets seized from Taliban militants at a police compound in Herat, Afghanistan, Friday, Dec. 4, 2009. (AP Photo/Fridoon Pouyaa)

Afghan police officers display rockets seized from Taliban militants at a police compound in Herat, Afghanistan, Friday, Dec. 4, 2009. (AP Photo/Fridoon Pouyaa)

An unidentified United States Marine from the 4th Light Armored Recon holds a puppy as he stands near the razor-wire of their base in Khan Nashin, in the volatile Helmand province of southern Afghanistan, Thursday, Dec. 3, 2009. (AP Photo/Kevin Frayer)

An unidentified United States Marine from the 4th Light Armored Recon holds a puppy as he stands near the razor-wire of their base in Khan Nashin, in the volatile Helmand province of southern Afghanistan, Thursday, Dec. 3, 2009. (AP Photo/Kevin Frayer)

A Polish helicopter with the NATO-led International Security Assistance Force (ISAF) is seen on the ground after hard landing in Ghazni, west of Kabul, Afghanistan on Thursday, Dec. 3, 2009. There is no reports of casualties so far. The commander of U.S. and NATO forces in Afghanistan worked to sell the American strategy for the country to Afghan parliamentarians Thursday, promising that international troops will not start leaving until Afghan security forces are ready to take over. (AP Photo/Rahmatullah Naikzad)

A Polish helicopter with the NATO-led International Security Assistance Force (ISAF) is seen on the ground after hard landing in Ghazni, west of Kabul, Afghanistan on Thursday, Dec. 3, 2009. There is no reports of casualties so far. The commander of U.S. and NATO forces in Afghanistan worked to sell the American strategy for the country to Afghan parliamentarians Thursday, promising that international troops will not start leaving until Afghan security forces are ready to take over. (AP Photo/Rahmatullah Naikzad)

An Afghan man walks his dog past the deteriorating skeletons of Soviet-era tanks on top of a hill in Kabul, Afghanistan, Thursday, Dec. 3, 2009. (AP Photo/Mustafa Quraishi)

An Afghan man walks his dog past the deteriorating skeletons of Soviet-era tanks on top of a hill in Kabul, Afghanistan, Thursday, Dec. 3, 2009. (AP Photo/Mustafa Quraishi)

In this Oct. 7, 2009 photo, an Afghan opium addict, who has lost his mental balance, looks on as he is chained to the wall at the Mia Ali Baba Shrine, on the outskirts of Jalalabad, east of Kabul, Afghanistan. The shrine is used as a rehabilitation center where the patients are brought by their family and chained for 40 days or until they recover from their addiction. The U.S. announced Monday, Nov. 23, 2009 that it is giving US$38.7 million to 27 Afghan provinces that either reduced poppy cultivation by more than 10 percent or became poppy free this year. (AP Photo/Altaf Qadri)

In this Oct. 7, 2009 photo, an Afghan opium addict, who has lost his mental balance, looks on as he is chained to the wall at the Mia Ali Baba Shrine, on the outskirts of Jalalabad, east of Kabul, Afghanistan. The shrine is used as a rehabilitation center where the patients are brought by their family and chained for 40 days or until they recover from their addiction. The U.S. announced Monday, Nov. 23, 2009 that it is giving US$38.7 million to 27 Afghan provinces that either reduced poppy cultivation by more than 10 percent or became poppy free this year. (AP Photo/Altaf Qadri)

Two 82nd Airborne Division aviation maintenance workers are silhouetted as they work atop an Apache attack helicopter at Kandahar Air Field in Afghanistan. (Chuck Liddy/Raleigh News & Observer/MCT)

Two 82nd Airborne Division aviation maintenance workers are silhouetted as they work atop an Apache attack helicopter at Kandahar Air Field in Afghanistan. (Chuck Liddy/Raleigh News & Observer/MCT)