In 2366, when Geordi La Forge was stranded on the surface of Galorndon Core, Wesley Crusher placed a neutrino beacon aboard a class-3 probe on the USS Enterprise-D. The probe was sent to land on the surface of the planet, where La Forge's VISOR was used to detect the neutrino particles. He was rescued when he found the probe and modulated the neutrino stream. (TNG: "The Enemy" ) In 2374, Tim Watters launched a class-3 probe from the USS Valiant to gather information on the Dominion's new battleship. (DS9: "Valiant")