It starts with the noise. Harsh mechanical sounds, like loud screeching. Then an uncomfortable pressure, a loss of balance — like being hit with a beam of energy. All of that can be followed by months, even years, of headaches, nausea and hearing and memory loss. Since 2016, more than 200 US government officials have described feeling some or all of these symptoms, and others. It's widely known as: "Havana Syndrome" — since the first cases were detected in the Cuban capital. Host Marco Werman speaks with retired CIA senior intelligence officer Marc Polymeropoulos, he's been outspoken about Havana Syndrome after experiencing many of these symptoms himself.