The Pentagon authorized an additional deployment of 1,000 troops on Sunday to aid the evacuation mission in Kabul as the Taliban retakes control of Afghanistan, according to a source familiar with the matter.

The overall number of temporary U.S. troops in Kabul is now expected to be at 6,000. A combat brigade numbering around 3,500 troops from the 82nd Airborne Division at Fort Bragg has been on standby in Kuwait in case additional reinforcements are needed, and an official speaking on the condition of anonymity said the troops would come from this rendezvous, Reuters reported.