Washington, D.C., Feb. 21, 2025 — William R. Forstchen, Ph.D., is a military historian and college professor who is widely considered one of the foremost experts on electromagnetic pulse (EMP) weapons. He has been consulted by numerous federal, state and local governments and private entities regarding the devastating impact of an EMP attack and has spoken at conferences all over the United States.
Citing the country’s already vulnerable energy grid, Forstchen said an EMP attack would wipe out power and set off a cascade of deadly events. The first necessity people would lose is water, followed by food supply and medication. Then, disease would set in. Long-term survival, he added, would depend on being in the right place at the right time with the right food supply.
“I believe the threat of America being hit by an EMP weapon is the single greatest danger to our survival,” Forstchen said. “Electricity is the fundamental building block of our society. Everything is predicated on electrification.”
An EMP causes widespread cataclysmic damage to power grids due to what’s called the Compton effect, he explained.
“An electromagnetic pulse is the byproduct of detonating a nuclear weapon. When a nuclear weapon is detonated 200 to 250 miles above the earth, the gamma ray burst when it hits the upper atmosphere sets off the Compton effect. In essence, a giant electrostatic discharge hits the earth’s surface and wipes out electronic devices as well as entire power grids, leaving affected areas in the dark,” he said.
Forstchen has written extensively about the devastating impact of EMP strikes, beginning with his New York Times bestseller, One Second After, which offers a realistic look at a weapon and its awesome power to destroy the entire United States, literally within one second. One Second After spawned three sequels, each of which is a fictional exploration rooted in the cold, solid facts of how an EMP strike above U.S. soil would impact society.
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