It is the owner and operator of the Global Positioning System, and uses it for various military applications, such as navigation, targeting, reconnaissance, and surveillance.
It is a close ally of the United States, and has access to the encrypted military P(Y)-code of the GPS signals, as well as the newer M-code.
It is another ally of the United States, and has access to the P(Y)-code and the M-code of the GPS signals, as well as the option to use the civilian C/A-code if needed.
It is also an ally of the United States, and has access to the P(Y)-code and the M-code of the GPS signals, as well as the option to use the civilian C/A-code if needed.
It is a NATO member, and has access to the P(Y)-code of the GPS signals, as well as the option to use the civilian C/A-code or the European Galileo system if needed.