Hanson might indeed be doing triplets; it's too hard for me to tell without doing the Audacity legwork. (Although it sounds like straight 16ths to me.) But in a

Hanson might indeed be doing triplets; it's too hard for me to tell without doing the Audacity legwork. (Although it sounds like straight 16ths to me.) But in any case, Metallica is definitely not doing swing here.