The recent evacuation of a group of U.S. diplomatic personnel stationed in Guangzhou, China, revived concerns over an “attack” that originated in Havana in mid-2016. At that time, several U.S. individuals working at the American Embassy in Cuba became ill after hearing sounds in their residences similar to cicadas or being in a car with the windows rolled down. The bizarre noises were accompanied by dizziness, headaches, hearing problems, visual focusing issues and cognitive impairments such as memory loss and difficulty concentrating on their daily routines.