On 8/6/20, jim bell <jdb10987 at yahoo.com> wrote: > The New Yorker: How Vulnerable Is G.P.S.?. > https://www.newyorker.com/tech/annals-of-technology/how-vulnerable-is-gps New series on Government has GPS explainer segment... https://twitter.com/adamconover/status/1521995456787607552 GPS Explained