-게 supplies the manner in front of 날아가다 'fly off'. Some lines are physical — 낮게 날아가는 볼 (a ball flying low), 더 높게 날아가지 않을까 (won't it fly higher?), popcorn threatening to go everywhere. Others are the figurative 'it's gone': 허무하게 날아간 3점의 꿈 (a three-point dream that evaporated for nothing), 그렇게 날아가는 거야? (does his story just go out of the window like that?).