Matt too knows what death sounds like. He can hear now that he's focusing that Stark's heart is slowing down and his breathing is getting softer and stuttering. The first hero....the one who took that step that let the rest of them be standing here today is dying and Matt, who has seen more death in his young life than he cares to admit to isn't sure how to feel about that. He bows his head and starts softly saying the rosary for the dying man.