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A .gov website belongs to an official government organization in the United States.
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An official website of the United States government.
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
On April 28, 2014, the Air Force began broadcasting civil navigation (CNAV) messages on all operational GPS satellites capable of transmitting the L2C and L5 signals. L2C and L5 are the first of several new …
Air Force Adds Navigation Data to Modernized Civil GPS Signals Read more »