ALL POSTS TAGGED WITH GPS
09/05/2017 / By Rhonda Johansson

The United States Department of Transportation Maritime Administration (MARAD) believes they may have seen the first documented use of GPS

http://www.futuresciencenews.com/2017-09-05-breakthrough-russia-military-tech-used-gps-spoofing-to-cause-ships-to-sail-off-course.html