 Foster said that because of human biophysics, the device "would kill you well before you were bothered by the noise".According to former professor at the University of Washington Bill Guy, ”There’s a misunderstanding by the public and even some scientists about this auditory effect," and "there couldn’t possibly be a hazard from the sound, because the heat would get you first".Microwave effects have been discussed as a possible source of the otherwise unexplained illnesses of U.S. diplomats in Cuba and China occurring in 2017 and 2018, though this possibility has been discounted by numerous experts.