The US military has fired over 850 Tomahawk cruise missiles in four weeks of war on Iran, burning through the precision weapons at a rate that has alarmed some Pentagon officials and prompted internal discussions about how to make more available, Reuters reports citing The Washington Post, which cited people familiar with the matter.

Reuters could not immediately verify the report.

The US military has more than enough munitions, ammo, and weapons stockpiles to achieve the goals of Operation Epic Fury laid out by President Trump and beyond,” White House Press Secretary Karoline Leavitt has said in a statement to Reuters.

“Nevertheless, President Trump has always been intensely focused on [strengthening] our armed forces, and he will continue to call on defence contractors to more speedily build American-made weapons, which are the best in the world,” Leavitt’s statement reads.

The US Department of War has not responded to Reuters’ requests for comment.