Sound Barrier e masani ona faʻaaogaina o se leo faʻaititia o auala, auala tele, ala nofoaafi ma isi pisa mafuaʻaga. O se ituaiga papupuni faʻatulagaina i autafa o le auala poʻo auala nofoaafi ina ia mafai ona faʻaititia ai le pisapisao o taʻavale i tagata o loʻo nonofo latalata ane.