
President, Resilient Navigation & Timing Foundation. Tweets about #GPS #GNSS #PNT #Galileo #Jamming #Spoofing #Navigation #Government #TimeSync
Joined January 2015
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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
Current & proposed @faanews rules for beyond-visual-line-of-sight drones barely mention #PNT — yet it's what tells unmanned systems where & when they are.
🔗 rntfnd.org/2026/09/22/unmann…
#GNSS #UnmannedSystems #Drones #FAA
The @uscg and @FBI boarded two US-bound ships after apparent hacks, one a very large oil carrier. Large vessels tend to have very few #Cybersecurity protections and unsophisticated navigation systems.
🔗 rntfnd.org/2026/09/21/two-us…
#Maritime #PNT #CriticalInfrastructure
History waited until 298 deaths to add a smell to natural gas leaks — will it take a #GNSS outage before nations invest in resilient #PNT?
🔗 rntfnd.org/2026/09/12/why-is…
#GPS #CriticalInfrastructure #NationalSecurity
A November 2025 #SpaceWeather storm pushed #GPS errors past 30 feet across nearly the entire continental U.S. Had it hit during spring planting instead, researchers say the losses could have run into the hundreds of millions.
🔗 rntfnd.org/2026/09/10/novemb…
#PNT #Agriculture #GNSS
The UK's new Space Strategy puts a price on inaction: £1.4B for one day without #GNSS, £7.64B for a week. Response: £248M for a National Timing Centre, £71M for #eLoran.
🔗 rntfnd.org/2026/09/08/new-uk…
#PNT #Resilience #CriticalInfrastructure