Dean hovered at the door. After a moment, he walked over to the bed and lay down next to his brother. "I don't leave you out of shit on purpose, you know."
Sam gave a disbelieving snort.
"Okay, I didn't do it on purpose this time," Dean amended. "But Sam, the guy the vamps grabbed was screaming. If I'd waited, he'd be dead. I had to move."
Sam was silent. Finally, he sighed and rolled over onto his back. They lay together, staring up at the ceiling.
Dean took Sam's hand, squeezed it gently. "I'm sorry I scared you, Sammy."