Clint sees the blood and the drag marks and he hears the machines, his frown deepening with every step they take. It's not that he minds taking out a big operation; it's just that he likes to know about it before he gets there.

The machines are messing with his hearing a little, and it's hard for him to make out any sounds over them, so he starts moving a little slower, motioning for Coulson to keep behind him.