> One key concern now for some officials is [...] that more than one country could now have access to a device that may be capable of causing career-ending injuries to US officials.
One the one hand this is a serious concern for U.S. officials on the other hand any modern weapon (guns, etc.) can cause career-ending injuries too. The covert operation is certainly an interesting feature though.
"pulsed radio waves" makes me think of lethal microwaves but only for a fraction of every second so they are not lethal but still damaging. If for a thousandth of every second you spiked a massive microwave burst into someone's brain I imagine it wouldn't be good for them.