During his first term, President Donald Trump issued an executive order directing federal agencies to prepare for and defend against a specific nuclear threat involving the detonation of a warhead at high altitude. This type of attack, known as an electromagnetic pulse (EMP) strike, involves exploding a nuclear device miles above the Earth’s surface. While such a blast would not cause immediate casualties, it could generate a powerful surge of energy capable of disabling electrical and electronic systems nationwide.

Experts warn that an EMP event, if detonated at the proper altitude and location—examples include approximately 250 miles above a central U.S. city like Omaha—could disrupt the power grid, telecommunications, banking infrastructure, and critical food supplies. The resulting damage could lead to widespread outages, cripple transportation systems, and potentially destabilize the country’s essential services for an extended period.

The potential consequences of an EMP attack have been a topic of concern for more than a decade, particularly among conservative circles. This awareness helped to shape policy decisions during the Trump administration. Several prominent officials in the current government, including Defense Secretary Pete Hegseth, Vice President JD Vance, CIA Director John Ratcliffe, and U.S. Ambassador to Israel Mike Huckabee, have been vocal advocates regarding the threat posed by EMP attacks.

The executive order reflects a broader effort to enhance the United States' resilience against unconventional nuclear threats and underscores the administration’s focus on national security challenges beyond traditional warfare scenarios. While the technical and strategic complexities of an EMP attack remain subjects of analysis and debate within defense circles, the government's stance signals an acknowledgment of the potentially devastating infrastructure disruptions such an event could trigger.