The idea is apparently still alive:
http://www.militarytimes.com/news/2008/10/gns_space_troops_101408/
http://www.timesonline.co.uk/tol/news/world/us_and_americas/article4969025.ece
http://www.militarytimes.com/news/2008/10/gns_space_troops_101408/
http://www.timesonline.co.uk/tol/news/world/us_and_americas/article4969025.ece