Tue. Jul 5th, 2022

One aspect of national resilience (Opinion, February 22) of which our public are largely unaware is that of precise timing and navigation signals from GPS satellites. It is a single point of failure and if GPS signals were disrupted the impact on merchant shipping, air travel and other transport, communications systems, bank and money transactions, control of electrical grids, water and sewage etc would be catastrophic. Certainly Uber would be out of business.

The government has been slowly addressing this issue but there is a need for urgency in a world of state-on-state confrontation.

Admiral Lord West of Spithead
House of Lords, London SW1, UK

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