US military forces have depleted a significant portion of their missile interceptors. According to sources, nearly 80 percent of these interceptors have been used, leaving reserves at critically low levels. The depletion of these defense systems has been particularly notable during the conflict with Iran.

Details about the current state of US military defenses are available from CNN, which reports on the low reserves of key defense systems. Further information on the specifics of the depleted missile interceptors and the current state of US military defenses can be found through CNN's reporting on the matter.