The Global Positioning System (GPS) and other global navigation satellite systems (GNSS) are embedded in the world’s critical infrastructure, from aviation and shipping to telecommunications and smart phones. Despite economic, social, and governmental dependence on satellite navigation and precise timing, GNSS are vulnerable to failure and security threats. Professor Last, and other members of the Bangor University Radio-Navigation Group, have worked with US, EU, UK and South Korean governments to develop and implement ‘Enhanced Loran (eLoran)’ as a back-up in the event of GNSS failure. The UK, US and South Korean governments have directly invested in the development of technology developed collaboratively by Bangor, leading to a vital economic safety-net for mariners and cross-sector users in relation to trade and defence.