US plans autumn tests in Nevada to detect foreign nuclear explosions, National Nuclear Security Administration head Brandon Williams tells Senate committee. The "decentralized tests" aim to improve seismic sensors for detecting tests by adversaries.

The head of the US National Nuclear Security Administration, Brandon Williams, announced during a Senate committee hearing that the US plans to test sensors in Nevada this autumn to detect nuclear tests conducted abroad. These "decentralized tests" aim to improve seismic sensors' ability to detect nuclear tests by adversaries circumventing the Comprehensive Nuclear-Test-Ban Treaty.