He's maybe a kilometre away, probably less, the others are all in the same spot by now, at the treeline of the forest, where it opens towards the open fields into which the plane crashed. They cannot see it (recognise it as a plane) now because a small hill and a few trees are in the way, but if Jake has heard the plane fly over and maybe climbed on the roof of his plane to see what's going on, with his binoculars (if they've got night vision), he might have observed the drop, but he'll definitely have seen the LED light Anna used for signalling, and since all are now gathered right where she used that light, he'd find them if he'd head that way. I hope that helped?  :D