Soon sleep gripped him for real, and the shotgun leaning on his leg slid to the floor and crashed heavily.
Sam and Dean both sprang awake. Only about two hours had passed.
"You dropped your gun. I feel so safe with you on guard duty." Sam said, giving Dean a stern look.
"I been driving all day. Cut me some slack." He said stooping down and picking up the loaded weapon. "Even if it did go off, it's not gonna kill ya, it's just salt."
"Yeah but it stings like a mother." Sam said walking over to the tiny hotel desk where his laptop sat. He flipped the case open, pressed the power button, and sat down in one fluid motion.
"Guess I'll get some sleep then. Your turn." Dean said, tossing the shotgun to Sam and falling back in to his chair.
"Gee thanks." Sam said. He was planning to do research anyway. The loud noise had his nerves jangled and getting back to sleep would be hard for him now. Dean on the other hand would sleep easily through a tornado.
"Lets see... unexplained disappearances in this neck of the woods... city historical society documents... ooh this is good stuff." Soon hours slipped away as he read the documents he could find, cross referencing with the various other phenomenon they had already experienced.
By dawn he had made up his mind, and as he began to feel the heavy hand of sleep overtake him he knew Dean would soon be awake and their day would begin.