What makes you think that about the US Government experiments? The effects of an EMP have been proven many many times.Yep. EMP is fiction bull**** to sell prepping supplies and give Hermets something to get a hard on over on the internet.
The United States government has been trying to get an EMP to do something for the last 50 years. So far they haven't so much as stopped a clock radio.
I'm more worried about the 16 year old taking a selfie on the freeway