Invisibility Cloak (Technology)
http://www.infowars.com/articles/science/real_cloak_invisibility.htm
http://www.rednova.com/news/oddities/5463/tokyo_professor_working_on_invisibility/
http://projects.star.t.u-tokyo.ac.jp/projects/MEDIA/xv/oc.html
they mostly work off the same principle of masking the desired object with a scene that takes place behind the object, however the USA cloak seems to be aimed at stopping light from playing upon the surface of the object they wish to cloak