Nowhere Is Safe

Drones in Ukraine and in the War with Iran have made the surface of the earth a contested space. The U.S. has discovered that 1) air superiority and missile defense systems (THAAD, Patriot batteries) designed to counter tens or hundreds of aircraft and missiles is insufficient against asymmetric attacks of thousands of drones. And that 2) undefended high value *fixed *civilian infrastructure – oil tankers, data centers, desalination plants, oil refineries, energy nodes, factories, et al -are all at risk.

When the targets are no longer just military assets but anything valuable on the surface, the long term math no longer favors the defender. To solve this problem the U.S. is spending $10s of billions of dollars on low-cost Counter-UAS systems – detection systems, inexpensive missiles, kamikaze drones, microwave and laser weapons.

But what we’re not spending $10s of billions on is learning how to cheaply and quickly put our high-value, hard-to-replace, and time-critical assets (munitions, fuel distribution, Command and Control continuity nodes, spares), etc., out of harm’s way – sheltered, underground (or in space).

The lessons from Gaza reinforce that underground systems can also preserve forces and enable maneuver. The lessons from Ukraine are that survivability while under constant drone observation/attack requires using underground facilities to provide overhead cover (while masking RF, infrared and other signatures). And the lessons from Iran’s attacks on infrastructure in the Gulf Cooperation Council countries is that anything on the surface is going to be a target.

We need to rethink the nature of force protection as well as military and civilian infrastructure protection.

Protecting Ground Forces The problem of protecting troops with foxholes against artillery is hundreds of years old. In WWI, trenches connected foxholes into systems. Bunkers were hardened against direct hits. Each step was a response to increased lethality from above. Today, drones are the new artillery; a persistent, cheap and precise overhead threat but with the ability to maneuver laterally, enter openings, and loiter. And mass drone attacks put every high value military and civilian target on the surface at risk. Fielding more hardened shelters for soldiers like the Army’s Modular Protective System Overhead Cover shelters is a first step for FPV kamikaze drones defense, but drones can get inside buildings through any sufficiently sized openings.

Drone Protection Ukraine has installed ~500 miles of anti-drone net tunnels with a goal of 2,500 miles by the end of 2026. These are metal poles and fishing nets stretched over roads but they represent the same instinct: the surface is a kill zone, so cover it. Russia has done the same.

The logical response is to go underground (or out to space) but the technology to do it quickly, cheaply, and at scale is genuinely new. The gap in current thinking is between “put up nets” (cheap, fast, limited) and “build a Cold War concrete bunker” (expensive, slow, permanent). What’s missing is the middle layer – rapidly bored shallow tunnels that provide genuine overhead cover for movement corridors, equipment parking, and personnel protection.

What tunnels solve that nets and shelters don’t A net stops an FPV drone’s propellers. A shelter stops shrapnel. But a tunnel 15-30 feet underground is invisible to ISR, immune most to top-attack munitions, can’t be entered by a drone through a door or window, and survives anything short of a bunker-buster. Gaza proved that even with total air superiority and ground control, Israel has destroyed only about 40 percent of Gaza’s tunnels after two and a half years of war.

That’s an asymmetric defender’s advantage the U.S. military should be thinking about for its own use, not just as a threat to overcome.

The problem is a lack of urgency and imagination The problem is real, the incumbents (Army Corps of Engineers) are slow, and the existing commercial tunneling industry isn’t thinking about expeditionary military applications. There’s no doctrine for rapidly boring hardened underground movement corridors, dispersed equipment shelters, or protected command post positions using modern tunneling technology.

Summary Protection and survivability is no longer a problem for a single service nor is it a problem of a single solution or an incremental solution. Something fundamentally disruptive has changed in the nature of asymmetric warfare and there’s no going back. While we’re actively chasing immediate solutions, we need to rethink the nature of force protection, and military and civilian infrastructure protection. Protection and survivability solutions are not as sexy as buying aircraft or weapons systems but they may be the key to winning a war.