http://www.globalsecurity.org/space/systems/hedi.htmhttp://www.globalsecurity.org/space/systems/e2i.htmhttp://www.globalsecurity.org/space/systems/endo-leap.htmhttp://www.globalsecurity.org/space/systems/ait.htm
Among others.
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May 18, 2009 at 9:03 pm