
President, Resilient Navigation & Timing Foundation. Tweets about #GPS #GNSS #PNT #Galileo #Jamming #Spoofing #Navigation #Government #TimeSync
Joined January 2015
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The $1B/day figure for losing #GPS comes from a discredited study — and it undersells the risk. Losing #GNSS would be a near-existential crisis for the U.S.
🔗 rntfnd.org/2026/10/28/war-in…
#PNT #SpaceSecurity @USSpaceForce
The UK's National #PNT Office wants to know who depends on the MSF 60kHz #timing signal. Call for evidence closes 11:59pm, 22 December 2026.
🔗 rntfnd.org/2026/10/27/uk-is-…
#UK #CriticalInfrastructure
Thieves took $100M+ in data center freight — one case used #GPS #spoofing to beat tracking. Owning a spoofer isn't illegal in the U.S.
🔗 rntfnd.org/2026/10/26/highwa…
#PNT #CargoTheft @FCC
A study at @GeorgiaTech of 367,000 ships found 31 zones of #GPS anomalies — 22 with strong evidence of large-area #spoofing, including Red Sea activity before the MSC Antonia grounding.
🔗 rntfnd.org/2026/10/25/367000…
#PNT #Maritime
Canada's new PNT Resilience Framework names over-reliance on #GNSS a single-point-of-failure risk — and starts with a National #PNT Office.
🔗 rntfnd.org/2026/10/21/new-ca…
#GPS #Canada #Resilience
A 15-year, $6.27B #GPS ground-control program was canceled without ever reaching operations. @USSpaceForce's answer: a commercially sourced, ground-first GPS Gen4.
🔗 rntfnd.org/2026/10/21/ocx-re…
#PNT #GNSS #NDAA #SpaceForce
Space Force plans global deployment of up to 56 satellite-#jamming systems — a reminder that #GPS and other signals from space can be disrupted.
🔗 rntfnd.org/2026/10/20/space-…
#PNT #GNSS #SpaceForce
PNT is a preparedness problem, not just a navigation one: jamming, spoofing, cyber interference and space weather can all take down the trusted #timing that telecoms, finance and emergency response run on.
🔗 rntfnd.org/2026/10/17/prepar…
#PNT #CriticalInfrastructure #GNSS
The Pentagon's FORTRESS America program would harden installations against cyberattack, sabotage, grid failure and supply disruption — but resilient #PNT is the foundation underneath all of it.
🔗 rntfnd.org/2026/10/16/fortre…
#GPS #CriticalInfrastructure
The UK now advises shipping to prepare for #GNSS-denied ops — official figures put a seven-day outage at £1.5Bn to the maritime sector, £1,309m of it in port operations.
🔗 rntfnd.org/2026/10/14/uk-gov…
#PNT #Maritime #eLORAN
38 people died after GPS #jamming reportedly disabled the ADS-B that would have identified Azerbaijan Air 8243 as friendly. What has aviation changed since?
🔗 rntfnd.org/2026/10/11/38-kil…
#GPS #PNT #AviationSafety #Russia #RIN
GAO again finds only marginal #PNT progress and coordination gaps across DOD. The House 2027 NDAA would go further, with a senior official coordinating all DOD PNT efforts and reporting to the Deputy Secretary.
🔗 rntfnd.org/2026/10/10/gao-di…
#GPS #GAO #NDAA #PNTPolicy
Words mean things: the UK has contracted for a #ResilientPNT Standard — agreed definitions against which systems and equipment can be measured.
🔗 rntfnd.org/2026/10/05/uk-res…
#PNT #Standards #GNSS #CriticalInfrastructure
Dr. Zak Kassas asks what role #LEOPNT will play in the future #PNT ecosystem if it succeeds — and why one size does not fit all.
🔗 rntfnd.org/2026/09/29/one-si…
#GNSS #Jamming #Resilience
A panel at ION GNSS+ called #GPS spoofing a "global aviation disease" as airliners are reported jammed near Los Angeles and San Diego.
🔗 rntfnd.org/2026/09/26/airlin…
#PNT #Jamming #Spoofing #Aviation #IONGNSS2026