At a Pentagon press conference Friday morning, Defense Secretary Pete Hegseth cheered about how U.S. operations against Iran have blunted Tehran’s munitions capacities and ability to fight.

“Iran has no air defenses. Iran has no air force. Iran has no navy. Their missiles, their missile launchers and drones are being destroyed or shot out of the sky,” Hegseth said, telling reporters the United States and Israel have struck over 15,000 targets in Iran. “Their missile volume is down 90%. Their one-way attack drones yesterday [were] down 95%.”

Hegseth also told reporters that U.S. attacks on Iranian defense companies have “functionally destroyed” the country’s ballistic missile production capacities. “We're shooting down and destroying what missiles they still have in stock, but more importantly, ensuring that they have no ability to make more,” he said.

What Hegseth did not mention is that the U.S. is blasting through its own stockpiles as the war continues. Since the war began, the U.S. and its allies have fired more than 1,000 Patriot PAC-3 Interceptors, and hundreds of cruise missiles. The Center for Strategic and International Studies (CSIS) estimates the U.S. used 168 Tomahawk cruise missiles in the war’s first 100 hours alone.

And Washington is mulling taking munitions systems from critical regions to the Middle East in order to sustain the fight. Gen. Alexus Grynkewich, commander of U.S. European Command, told Sen. Angus King (I-Maine) at a Senate Armed Services Committee (SASC) hearing Thursday that the U.S. had moved air defense systems from Europe to the Middle East to fend off Iranian attacks. The Pentagon is also reportedly moving some of its THAAD missile defense systems from South Korea to the Middle East.

The burnt-through munitions will take years to replenish. To remedy the issue, the Pentagon has been actively consulting with defense contractors to ramp up munitions production rates, in an effort to double or even quadruple them.

But Trump officials have publicly downplayed this state of affairs. As war on Iran began at the end of February, President Donald Trump suggested the U.S. had “unlimited” weapons to fight “forever” war. That was despite an internal warning from Gen. Dan Caine, chairman of the Joint Chiefs of Staff, that the U.S. was already running low on stockpiles due to their extended use in wars in the Middle East and Ukraine.

The Pentagon estimates the first week of the war on Iran cost about $11 billion. Munitions make up much of that price tag; those used during the first two days of war cost $5.6 billion alone.