This is what I was posting about above. CNN
"Top executives from US defense contractors are set to visit the White House on Friday to discuss ramping up weapons production, a White House official told CNN.
President Donald Trump has sought to project confidence in US military capacity, saying Tuesday there was a “virtually unlimited supply” of US munitions and that “wars can be fought ‘forever,’ and very successfully, using just these supplies.”
Earlier Tuesday, the president told Politico that defense manufacturers are operating under emergency authorities to accelerate weapons production."
They are short of ammo.
If they run out of ammo for the anti missile defences before Iran runs out of missiles and drone, then the US bases are left open to attack.