The U.S. Department of Defense has directed major military installations to operate independently for at least 90 days without reliance on civilian power grids, external fuel, or water supplies, according to a Pentagon spokesman and a defense secretary memo.
The initiative, dubbed FORTRESS—short for Federal Operations for Resilience, Troop Resources, Energy, Supply, and Survivability—was confirmed by Pentagon chief spokesman Sean Parnell on October 25. The plan aims to harden U.S. military readiness amid evolving threats, including disruptions to global supply chains and infrastructure sabotage risks.
Immediate Implementation and Core Requirements
The 90-day standard applies to electricity, water, fuel, communications, and other essential services needed to sustain military operations, per Parnell’s statement. The initiative was first reported by Fox News Digital and later corroborated by Defense Secretary Pete Hegseth in a September 30 memo.
Hegseth described FORTRESS as “the nation’s insurance policy” to prevent the U.S. from being “starved out, shut down, or cut off” during a conflict. The memo outlines five pillars underpinning the strategy:
- Energy independence
- Supply chain and defense industrial base resilience
- Strategic defense reserves
- Installation hardening and cyber resilience
- Resilience in space and spectrum
Rationale and Strategic Shift
Parnell emphasized that the U.S. can no longer assume geographic isolation will protect it. “War has evolved, the threats have evolved, and our defenses must evolve with them,” he stated. The initiative reflects a broader shift toward self-sufficiency, including preparations for potential disruptions to global supply chains and civilian infrastructure.
Hegseth’s memo also cited lessons from the Russia-Ukraine war, where attacks on energy infrastructure and fuel supplies highlighted vulnerabilities in both civilian and military operations. The Pentagon’s focus on hybrid warfare threats, such as sabotage of pipelines and data cables, further underscores the urgency of the plan.
Cost and Timeline Uncertainty
A senior U.S. defense official noted that while some components of FORTRESS could take years to implement, the initiative is already underway. The total cost remains unspecified, though the scope suggests significant investment in infrastructure upgrades, energy storage, and supply chain diversification.
Broader Policy Context
The FORTRESS initiative aligns with prior defense strategies under the current administration, including Golden Dome, a program focused on Western Hemisphere security, and expanded military presence in regions like Greenland and Panama. These efforts aim to reduce reliance on overseas supply chains and enhance regional deterrence.
The Pentagon has not provided a public timeline for full implementation but has confirmed that existing military bases are being assessed for compliance with the 90-day standard.