Fear, Heidegger tells us, is always of something--of something that is in the world. It is grounded or founded in threat, or in being threatened by something, and the founding or grounding movement of that experience--the experience of being threatened by something--is in the swift approach, experienced as a nearness that could almost be described as an on-handedness--in other words, "it is on hand"--of something that has not yet arrived.