Zeus sent burning flashes of lightning and roars of thunder against the Greeks.  Fearful, the Greek army turned in a rout towards the ships.  Nestor stayed in place because Alexandros had transfixed his trace horse with an arrow through the brain.  Hector bore down on Nestor but Diomedes offered the old man a place in his chariot.  Nestor took the reins and whipped the horses forward to meet Hektor.