"The National Security Agency confirms that there is intelligence information from 2012 associating the hostile country to which Mr. Beck traveled in the late 1990s with a high-powered microwave system weapon that may have the ability to weaken, intimidate, or kill an enemy over time and without leaving evidence. The 2012 intelligence information indicated that this weapon is designed to bathe a target’s living quarters in microwaves, causing numerous physical effects, including a damaged nervous system. The National Security Agency has no evidence that such a weapon, if it existed and if it was associated with the hostile country in the late 1990s, was or was not used against Mr. Beck."
Document provided to attorney of NSA employee, Mark S. Zaid, in relation to his worker's compensation claim at the U.S. Labor Department.
Reference from NYT article by William J. Broad https://www.nytimes.com/2018/09/01/science/sonic-attack-cuba-microwave.html (hyperlink of word "statement")
Havana Syndrome attorney Mark Zaid, featured in NBC documentary on Havana Syndrome, refers to the 2014 declassified document citing high-powered microwave system weapon designed to bathe a target’s living quarters in microwaves, causing nervous system damage among other effects.
He mentions that this is the document that the government and major agencies need to respond to and say "what did you mean by this".
Video shared by the PACTS International newsletter: https://www.youtube.com/watch?v=dAJdzOyA4hE&t=24s
Full video: https://www.youtube.com/watch?v=-tmFJDpLuMI&t=1021s