Levelland EM-interference case (Nov 1957).
disputedclose_encounterProject Blue Book
~15 independent reports over ~3 hours of vehicle engine/headlight failures as a glowing egg/torpedo object passed low, engines restarting when it left; includes law-enforcement witnesses.
A strong multi-independent-witness EM-effect case — but Blue Book classified it EXPLAINED (ball lightning / St. Elmo's fire), a prosaic verdict later DISPUTED by McDonald + Hynek (who noted no storm was present). Tagged disputed: strong pattern, official prosaic label, contested.