Mid-century, I lived in Chippewa County, where we had Kinross Air Base, a DEW Line SAC Post, an Army base, a BOAC missile base, and a Canada US Border crossing plus the Soo Locks, which was designated a primary target in the event of a nuclear attack. We would often see multiple contrails lasting for hours as the various planes maneuvered and kept track of things. One of my elementary teachers went into considerable detail about these trails, what they were [[water vapor) and why we could see them for some time. There are still a lot of contrails up that way, and the area is now rampant with chemtrail theorists.

In the 70s, we were all going ballistic over ELF, which was eventually built, and not long after, was replaced by other technology. Lots of fear about mind control by ELF waves was going around, seems pretty much quieted down now.

So far, no evidence of mind control, unless it is so widespread we all think it is normal.