Trump administration considers a 'heat ray' weapon for the US-Mexico border

Summary

The Trump administration is considering using the Active Denial System, a heat-ray weapon, at the border. According to Scientific American, the system uses millimeter waves to heat people's skin from as far as a kilometer away.

Timeline

1. Scientific American

   23 Oct 2026, 18:00 UTCSource ↗

   Scientific American reports that the Trump administration is considering a 'heat ray' weapon for the border and explains that the Active Denial System uses millimeter waves to heat people's skin from as far as a kilometer away.