How Iran's attack on Gulf aluminium hubs could impact US defence?

Iran recently targeted Emirates Global Aluminium (EMAL) and Aluminium Bahrain (ALBA) facilities in Gulf, as aluminium is embedded across US defence ecosystem. Though US doesn't rely solely on Gulf aluminium, attacks on EMAL/ALBA could put pressure on US manufacturers. Higher aluminium prices will affect aircraft production costs, missile & defence system inputs, & maintenance & replacement cycles.