Despite what the icon may lead you to believe, Mack is not wearing a cowboy hat. Go figure.
He's rolling up his shirt sleeves, seemingly paying very little attention to his surroundings. This is probably not the case. He's got...some kind of...thorny...baton...thing in a holster. It looks cool, whatever the hell it is. When he's satisfied with his state of dress, he looks up.
"You ever meet somebody made you wish you'd known somebody else a little earlier?"