An Afghan man and children gather around a fire in a hillside neighborhood in Kabul April 7. (Hossein Fatemi/AP)
Village elder Haji Amir Mohammad Agha presents a rose to U.S. Army Spc Charli Johnson during a visit by Afghan and U.S. soldiers in Jelawar in the Arghandab Valley north of Kandahar April 18. (Bob Strong/Reuters)
A U.S. Army pilot from "Dustoff" team, C Company, 1-214 Aviation Regiment, 101st Combat Aviation Brigade runs for cover from a sandstorm at Camp Dwyer in Helmand province April 12. (Denis Sinyakov/Reuters)
Captain Elizabeth Jackson from the U.S. 3rd Battalion 2nd Marine Regimental Combat Team 8 watches an Afghan boy on a swing near the town of Musa Qala in Helmand province in southern Afghanistan on April 12. (Peter Parks/AFP/Getty Images)
Army Sgt. Jesse Rosenfield, U.S. flight medic with Task Force Thunder Brigade, Charlie company 1st of the 52nd Aviation regiment from Fairbanks, Alaska tries to save the life of an Afghan man who is a double amputee victim from an improvised explosive device, on board a helicopter April 25 in the Arghandab river valley in Kandahar province. (Paula Bronstein/Getty Images)
US Marines Andrew Balcunas (right) and William Kloth (middle), along with Afghan national police, talk to a villager during a joint patrol in Habibullah village in Khanashin District, Helmand province, on April 24. (Bay Ismoyo/AFP/Getty Images)
An Afghan refugee girl waits for a truck before departing for Afghanistan at a UNHCR repatriation terminal in Peshawar, Pakistan April 19. A total of 1,757 Afghan refugees were repatriated in March as part of the ongoing voluntary repatriation program. (Mohammad Sajjad/AP)
An Afghan policeman leads a fireman away from a burning NATO fuel tanker on the Jalalabad-Kabul highway, east of Kabul, on April 27. A bomb planted beneath the tanker exploded without casualties. (Rahmat Gul/AP)