I want one, too. But it needs a rack of air to ground missles and a gatling gun. There was something like this in an episode of the old Superman TV series with George Reeves. Seems businessmen were being murdered by an invisible killer that made a high-pitched buzzing sound that only Superman could hear. Turned out to be a tiny R/C plane operated remotely by a crazed scientist. Pretty exotic stuff in the Fifties.