US Defense Secretary Pete Hegseth (L) shakes hands with the Chairman of the Joint Chiefs of Staff Gen. Dan Caine after both testified during a Senate Committee on Appropriations hearing on Capitol Hill in Washington, DC on July 21, 2026. US lawmakers are conducting a hearing to examine a review of US President Donald Trump's supplemental funding request of June 24, 2026. (Photo by Alex WROBLEWSKI / AFP via Getty Images)