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)

ESTABLISHMENT OF A SECURE PERIMETER

In the case of physical manifestation of IEL, a perimeter around the affected area must be immediately established to keep distance between the IEL and the public, thereby minimizing the threat of accidental contact and potential ensuing panic and/or large-scale public gatherings. The simplest way to do this is to declare that there has been a gas leak or other equivalent disaster,^I then evacuate any locals “for reasons of their own safety.” Use your federal powers to enlist the local police, but of course do not tell them the true reasons for establishment of the perimeter. The actual size of the perimeter will most likely be based on the size of the area of physical manifestation, though as a rule it is good to give yourself a half mile of distance on all sides.

---

I. Other disaster options include (but are not limited to) downed power lines, brush fires, flooding, and rogue grizzly bears.