[Jack Black]

The Navy Yard shooter claimed that people were using microwaves through the walls of the hotel he was staying at, and trying to program him. He went to the police a few weeks before the shooting to report this. Here is a news story on this

Navy Yard shooter had odd episode in R.I. -- Told police lastmonth of voices, vibrations

He also etched messaages into the shotgun he used in the shooting. One side said "Better off this way" and the other "My ELF Weapon". ELF is an acronym for "Extremely Low Frequency", which is a type of communication used by the Navy to communicate with submarines. Here is a link to the CBS News story reporting these things:

Navy Yard Shooting Update: Aaron Alexis etched messages into shotgun used in massacre.

After a bit the media settled on the "He was delusional" message, which they got from the FBI, and went with it.

FBI: Navy Yard shooter 'delusional,' said 'low frequency attacks' drove him to kill

The shooter, 34 year old Aaron Alexis, a Navy veteran receiving partial disability pay, wrote:

"Ultra low frequency attack is what I've been subject to for the last 3 months," read a message obtained by federal authorities from Alexis's thumb drives, phones and computers. "And to be perfectly honest, that is what has driven me to this."

Informational blog on ELF Mind Control here:

The ELF God

[Lazamataz]

I actually remember that. My ears perked up because I had remembered the Soviet incident from 1979, and the microwaves they were beaming into the Embassy. One of my college friends had a brother who was in the military detachment guarding that Embassy, and when it came out, the brother confirmed it was common knowledge around the place that the Soviets were doing it to degrade Embassy staff cognition and readiness.

The claims of the microwaves being used for passive eavesdropping may have been true, but this was a secondary benefit. The benefit the Soviets were hoping for was the performance degradation.