tract n 1: an extended area of land [syn:
piece of land,
piece of ground,
parcel of land,
parcel]
2: a system of body parts that together serve some particular
purpose
3: a brief treatise on a subject of interest; published in the
form of a booklet [syn:
pamphlet]
4: a bundle of nerve fibers following a path through the brain
[syn:
nerve pathway,
nerve tract,
pathway]
I think you mean "security track"
Pat Paulson, at your service (IOW, "picky, picky, picky")