Allegations of injuries caused by the presence of unidentified flying objects go back to the very start of the contemporary manifestations of the phenomenon in the 1940s. Readers with a thorough background in the field are probably thinking right now of the Stephen Michalak case (Canada, 1965) or in Aracariguama case (Brasil, 1949), or far less lurid incidents like the patrolman whose injury ' a pet alligator bite ' was allegedly healed by a beam from a UFO Groups of humans have been victims of these beam attacks, as in Argentina's Trancas case, where a family was besieged within their home by beam weapons that caused a drastic increase in temperature, or Brazil's Ilha Colhares, where townspeople fell prey to the predations of the box-like ' and still unexplained 'chupa-chupas.