On May,22 they even launched a ground attack on Kandahar air field, NATO's sprawling military base outside the city.

VOA: standard.2010.05.26

Speaking to VOA by telephone, a U.S spokeswoman at Bagram, gave details of the fighting, "Several insurgents were killed in the attack this morning on Bagram Air Base that included small arms fire, mortars,rockets and grenades.

VOA: standard.2010.05.19

Gul, who was taken to a U.S. military hospital at Bagram Air Base after the attack and treated for the bullet wound to his left shoulder, is now a watchman at the new school.

NPR: Afghan Villagers Flee Their Homes, Blame US Drones

There have been some questions about whether Saudi Arabia will allow the U.S. to use an air base as a command center for any military attack on Afghanistan.

CNN: Kelly Wallace is a CNN White House correspondent.

Other U.S. officials said the United States has long suspected members of Iranian security forces of being linked to the attack on Khobar Towers at the King Abdul Aziz air base.

CNN: Khobar Towers indictments returned