The U.S. has massive amounts of ‘munitions,’ especially of certain types
technically correct - they have massive amounts of JDAMs, which they can't actually use anywhere outside the coastal regions of Iran since it would require actually risking penetrating planes deep into Iranian airspace - so however many of them they have doesn't actually matter 

digression but that "systems" should probably be "munitions" or "interceptors", generally "system" is used to refer to the actual launchers or the trucks carrying them
you WILL get brutally hazed and YOU WILL LIKE IT! 


https://archive.ph/fXD04
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(more photos in the article)