The CIA could neither confirm or deny that the United States is using Direct Energy Weapons on its own population, because this information is classified. This emerges from a now published FOIA request. With this in mind, it can be concluded that the CIA knows exactly about the illegal attacks with Direct Energy Weapons, maybe is even involved. Otherwise, they could simply deny the attacks. The fact that the CIA relies in this context on 40s acts seems to me a typical maneuver: As much distance as possible to the monstrosity to which the request relates.
Dear Ms. Duvall:
This is a final response to your 8 July 2018 Freedom of Information Act (FOIA) request, received in the office of the Information and Privacy Coordinator on 9 July 2018, for any documents about direct energy weapons (DEW) being tested or used on United States citizens….In accordance with Section 3.6(a) of Executive Order 13526, the CIA can neither confirm nor deny the existence or nonexistence of records responsive to your request. The fact of the existence or nonexistence of such records is itself currently and properly classified and is intelligence sources and methods information protected from disclosure by Section 6 of the CIA Act of 1949, as amended, and Section 102Aff )(1) of the National Security Act of 1947, as amended.
Here the whole document: