State Department says roughly 250 Americans still want to leave Afghanistan

• The U.S. Embassy in Kabul on Saturday told Americans at the airport to "immediately" leave because of "a specific, credible threat."
• Some of the Americans who want to leave may already be at the airport or in the process of being guided there, the department said.

By the numbers: Nearly 5,500 American citizens have been evacuated from Afghanistan since Aug. 14.

• The department has contacted roughly 280 people who said they were Americans but were undecided on leaving or said they do not intend to evacuate.

The big picture: The U.S. conducted an airstrike in Kabul on Sunday against a vehicle that presented an "imminent ISIS-K threat" to the airport, according to U.S. Central Command.

• It conducted a prior strike against two high-profile ISIS-K members on Friday in retaliation for the group's suicide bombing that killed 13 U.S. troops and several Afghan citizens.

Go deeper: The U.S. service members who died in the Kabul blast