WASHINGTON (REUTERS) – With more US troops on the way, up to 600 members of Afghan security forces have helped provide security at Kabul’s airport, the scene of chaotic evacuation efforts, even as Afghanistan’s military and government has collapsed, Pentagon officials said on Tuesday (Aug 17).

Army Major-General William Taylor, with the US military’s Joint Staff, told a news briefing that a total of 4,000 American troops would be at the airport by the end of the day – an increase of 1,000 – and the aim is to have one flight taking off per hour.

About 6,000 US troops are expected to be at the airport in the coming days, according to Pentagon officials.

“We have had no hostile interactions, no attack and no threat by the Taleban,” Taylor said.

The United States and Western allies have sought to evacuate diplomats and civilians at Kabul’s airport, the only way in or out of the country for many people in Afghanistan.

The situation descended into disorder on Monday, with flights unable to leave because the airfield was filled with Afghans desperate to flee the Taleban.

Taylor said approximately 500 to 600 members of Afghan national security forces were at the airfield “assisting us with that security.”

Asked about whether these Afghan security personnel would be evacuated from Afghanistan as well, Pentagon spokesman John Kirby told the briefing that it would be up to them to decide.

“That would have to be a decision by those individuals if they wanted to apply for a visa and to pursue that approach,” Kirby said.

US military officials at the airport have been in contact with Taleban commanders on the ground outside the airport, Kirby added.

“There have been discussions, there is communication between them and us,” Kirby said.

US military officials have said between 5,000 and 10,000 US citizens are believed to be in the Kabul area.

Much of Afghanistan’s military crumbled as Taleban forces swept through Afghanistan, culminating with the capture of Kabul and departure of President Ashraf Ghani from the country.

Most elements of the Afghan national security forces, trained by US and Western allies over a span of nearly two decades, rapidly collapsed in the face of a swift advance by Taleban forces.

The Taleban, toppled as Afghanistan’s rulers in 2001 by a US-led invasion, moved to regain power as the United States withdrew its forces to end America’s longest war.