troops know that time's running out. still trying to help as many as possible, but the window's fast closing. and soon they'll have to think of their own departure. the americans have got to be given time to get out after we have pulled out. it's about 48 hours which they've got left to actually extract people before they have to start focusing on their own extraction. western forces are still trying to have to worry about their own security to complete that extraction. aircraft have been firing flares as a precaution to avoid the potential danger of surface—to—air missiles. but securing the perimeter of the airfield as forces draw down will be a battle in itself. the biggest fear now for commanders on the ground is the threat of a suicide attack, with the focus on extremists linked to the group calling itself islamic state. it's hard to overstate