Sighing, Cas nodded. It had not been his intention to offend her, but knowing it was far from time to argue, he simply came up to the building, prepared to kick the door in. However, upon getting a closer look, he was surprised to find it was already open. Logically, it could be Johnny or Jo. Dean was also a likely candidate, yet he entered with his weapon aimed.
This was the part that all hunters considered difficult. Heart rate. Breathing. Alertness. All were important, but for Cas, it was as simple as reminding himself that he was entering combat. He didn't always experience fear in the same way, which he imagined Anna would stress to him later was self-destructive, but...he was still partially an angel. And there was no fear of death.
The building was old enough to smell like mold, with a dingy appearance. And the poor light made the figure before him difficult to make out. Not wanting to take any chances, he raised the weapon and pointed it in the figure's direction. "Turn around," he said firmly. "You will put your weapon down and identify yourself."