From The Grey House:
Dean sobbed as he realized he didn’t even know what path he was to take. For the moment, he knew he had to give the vampire’s people time to leave, and then he would need to leave as well. This room had the fire escape. He would use it to leave and then he would leave the city as well. Maybe somewhere out there was something that would help him fight the vampires. He had researched a lot of artifacts for Zechariah. Maybe he could find one of them.
If nothing else, Dean knew he needed to learn how to fight. He couldn’t count on anyone else to hit the right target, apparently. Sighing deeply, Dean waited until it was safe to leave.