No-Lone Zone (NLZ)Created OnMarch 4, 2018Last Updated OnMarch 4, 2018Views71 Print You are here: KB Home Definitions Definitions N-O No-Lone Zone (NLZ) < BackArea, room, or space that, when staffed, must be occupied by two or more appropriately cleared individuals who remain within sight of each other. See Two-Person Integrity. SOURCE: CNSSI-4009