USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

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.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Archived News

  • October 31, 2011

    This is a key year for global navigation satellite systems. However, an item that sells for as little as $30 has already caused big problems for this rapidly growing technology and highlights the vulnerability of GPS.