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Stephens: When something untoward enters into the tracking field of NORAD/Fence, it then begins a series of tracking logarithms to track speed, location, altitude, departure angle, mass, heat, and inherent velocity. From there it runs a test for itself to confirm that whatever it is is not something we have in space. From there a management program kicks in called, 'Intruder Assessment.' If a series of democratic protocols weighs out then the next step is to start a serious of visual confirmations with our own air assets. Stealth 117A and or SR-71 are dispatched to attempt intercept. From there the 'Fence' protocols go through a series of 'what is' formats until the intruding element is either confirmed to be something from us or an unknown. Unknowns are called a 'Gray.'