Sorry, I think I copied the title of yet another article. I have been following the technical aspects of this GPS - Lightsquared fight way before the WH Politics were brought to the forefront.
Try this one, works for me but I have a subscription.
The Threat to GPS
Tests Begin On GPS Receivers As Jamming Threat Grows
Aviation Week & Space Technology Apr 11 , 2011 , p. 26
After General William Shelton admitted Obozo wanted him to lie in giving testimony my tentacles went up and have been reviewing some of those older articles. One can come to no other conclusion than Obozo is committing TREASON with his "Pay to Play" for donors at Lightsquared, and is putting the entire GPS constellation in jeopardy in the process. Missiles depend on navigation using GPS. The only thing I can remember that even comes close is when Klintoon donor Bernard Schwartz, CEO of Loral helped Chine out with a reliability issue on their missile launch failures and ignored the State Dept controlled ITAR export restrictions. TODAY the Chinese have no problem with the reliability of their ICBM launch vehicles.