Members of Congress were again warned this week about the threat of an electromagnetic pulse (EMP) attack from North Korea or other rogue entities that could have catastrophic effects on the United States, akin to an extinction-level event.

The briefing was given by two members of the former EMP congressional commission, who said that a nuclear detonation delivered from a missile or satellite could create an EMP which could “shut down the U.S. electric power grid for an indefinite period, leading to the death within a year of up to 90 percent of all Americans.”

Dr. Peter Pry and William Graham of the Commission to Assess the Threat to the United States from Electromagnetic Pulse Attack, established in 2001, have followed the EMP threat closely for many years, and are highlighting North Korea’s recent rapid nuclear missile capability as further proof that the U.S. is behind the curve in preventing a disaster.

In a prepared statement, Dr. Pry wrote: