https://www.sciencenews.org/article/muon-manna-particle-shower-may-spotlight-loose-nukes
Muon Manna? Particle shower may spotlight loose nukes
Aug 8, 2019 - Radiation from space may help border guards spot loose nukes stowed in shipping containers.
particle showermay spotlightmuonmannaloose
https://en.wikipedia.org/wiki/Particle_shower
Particle shower - Wikipedia
particle showerwikipedia