Definition of the term 'screen ' per official documentation of the United States Department of Defense.
screen
(*) 1. An arrangement of ships, aircraft and/or submarines to protect a main body or convoy. 2. In cartography, a sheet of transparent film, glass, or plastic carrying a ?ruling? or other regularly repeated pattern which may be used in conjunction with a mask, either photographically or photomechanically, to produce areas of the pattern. 3. In surveillance, camouflage and concealment, any natural or artificial material, opaque to surveillance sensor(s), interposed between the sensor(s) and the object to be camouflaged or concealed. See also concealment. 4. A security element whose primary task is to observe, identify, and report information, and which only fights in self-protection. See also flank guard; guard. 5. (DOD only) A task to maintain surveillance; provide early warning to the main body; or impede, destroy, and harass enemy reconnaissance within its capability without becoming decisively engaged. See also security operations. (US DoD)
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