A National Academies panel commissioned by the State Department shed new light on a disturbing and still mysterious episode. Employees in the Cuban embassy reported headaches, pressure, nausea, strange piercing noises, and cognitive problems seeming to emanate from a directed source. Commerce Department employees in China also had similar experiences. Some still haven’t fully recovered from the 2016, 2017 and 2018 occurrences. For more on the panel’s charter and what it found, Federal Drive with Tom Temin gave a wide ranging interview to the committee chair, of which you’re about to hear an excerpt. Dr. David Relman is a professor at Stanford Medical School and chief of infectious diseases at the Palo Alto Veterans Affairs health system. He discussed some of what hampered the investigation.