At least 18 separate EMP test facilities were built, each designed to test different parameters as aircraft systems became more complicated with the introduction of avionics and flight computers.

"The threat of an EMP was first realized during the 1962 Starfish Prime high-altitude nuclear test. What happened was ... next-generation missile defense shield to protect the United States ...

READ ON THE FOX NEWS APP "The threat of an EMP was first realized during the 1962 Starfish Prime high-altitude nuclear test. What happened was that it blew about 500 miles ... Trump has ordered the ...