Dean had watched as the man died in front of them, his heart dropped as he lowered his head, knowing there was nothing else they could have done but give his dying wish. As much as he had witnessed death and delivered it for most of his life, this still brought grief for him. A person that was pulled into a Hunter's life to protect someone they cared for most. Now the protection of the kid was now their's to bare and help keep a long-living, and probably the last of the family alive. Dean had ignored the blood that was now on his person as he gave his moment of silence for the man before his head snapped up in a sharp turn to the scream that he and his brother heard that was further within the warehouse. Dean then looked to his brother before getting to his feet quickly and taking off with Sam to the source of the scream that was Evie. A new source of motivation carrying him forward and willing to kill those who would stand in his way. He was a feared Hunter for a reason, same with his brother.