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Were Cuban 'Sonic Attacks' on our Embassy Due to Malfunctioning Surveillance Gear?
[Miami Herald via PJ] The State Department announced that the cuts made to embassy staff in Havana after strange and unexplained "sonic attacks" sickened diplomats and their families will become permanent.
Cicada? No, that's a symptom not a cause.
But the attacks themselves remain a mystery. However, a team of computer research scientists at the University of Michigan may have an explanation: malfunctioning surveillance equipment.

Miami Herald:

Professor Kevin Fu and members of the Security and Privacy Research Group at the University of Michigan say they have an explanation for what could have happened in Havana: two sources of ultrasound ‐ such as listening devices ‐ placed too close together could generate interference and provoke the intense sounds described by the victims.
Posted by: Besoeker 2018-03-04
http://www.rantburg.com/poparticle.php?ID=509410