"I don't know what that means," James admitted, still unwilling to let down his guard. Was it a special ops unit? Castiel - was that his code name? Without knowing anything about angels, James kept his gaze fixed on that of the other man's. There was no fear in the other's eyes, just as there was no fear in James'. To James, that meant that the man was strong enough to defend himself. That alone made him relax.
"I am not like others," James warned, stepping once backwards - not for himself, but for Castiel. "I may hurt you." He paused, and added, "It would not be my intention." But it was possible, at least in James' mind, that he could.
None of this conversation explained why Castiel was on the roof. James didn't usually find others who used roofs to travel.