Audio forensics suggest as many as three weapons fired at Trump rally The first three shots were consistent with alleged weapon A, the next five were consistent with alleged weapon B, and the final “acoustic impulse” was emitted by a possible weapon C, per audio analysis by Catalin Grigoras, director of the National Center for Media Forensics at the University of Colorado in Denver, and Cole Whitecotton, Senior Professional Research Associate at the same institution.
