The massive offensive has put the government in Kabul on its heels, and the Pentagon has started planning for a full withdrawal of the American mission in Kabul, three people familiar with the preparation told POLITICO, with two saying U.S. Central Command sees a full embassy evacuation as “inevitable.” In a sign of the deep concern permeating Washington, the embassy’s facility manager ordered staff Friday to start destroying documents and equipment.

The list includes classified documents, electronics, and large items that will be crushed with a large roller, according to an internal memo. Also slated for destruction are any documents featuring “American flags…which could be misused in propaganda efforts.”

At the Kabul airport, expected to be a focal point in the coming days, 3,000 U.S. Marines and soldiers began arriving alongside 600 British soldiers to evacuate their diplomats and citizens. They will also attempt to speed up the departure of Afghans applying for visas to flee the country.