In the high latitudes where the modern world's invisible infrastructure grows most exposed, Norway once again convened the builders and defenders of satellite systems for their annual reckoning with a quiet but consequential threat. Jammertest — a gathering of defence contractors and technology companies — exists because the radio signals guiding aircraft, ships, financial markets, and power grids can be deliberately silenced, and because the Arctic has become a theatre where that silence is increasingly possible. As geopolitical pressures mount and reliance on satellite communications deepens