Excerpt from The Official NASA Procedures for Contact with Intelligent Extraterrestrial Life © National Aeronautics and Space Administration, Department of Extraterrestrial Affairs, 2029 (Classification Level AAA)

PHYSICAL MANIFESTATION

While the likelihood of an actual physical appearance of IEL on earth^I without previous radio contact is regarded as highly unlikely, it cannot be ruled out. Therefore, NASA is constantly monitoring outer space in the immediate vicinity of our planet.^II Should incoming IEL be detected, highly trained professionals will instantly be mobilized to ensure that, if they are not the primary contact with IEL, they will certainly be the secondary contact. Any untrained earthlings who might make primary contact with IEL are to immediately be placed under quarantine. (For more on this, please turn to the Quarantine section of this manual.)

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I. Or, as the case may be, the airspace and atmosphere around earth.

II. Due to budgetary considerations and the enormity of space, NASA is unable to monitor the entire vicinity around earth all at once, but our scientists are doing their best.