Dean was beyond impatient. He wanted to get this thing over with, to see if Jo and Heather were safe or if they were...Dean didn't want to think about that. His priority in this was to get everyone out-first Heather and Jo because they had been gone for two long and would likely need more help, and then his Dad and Sam, because they were his family, and then everyone else, because they cared enough to help.
He wasn't stupid, he knew there were risks to this thing, that it HAD to be a trap, but he had no choice but to be optimistic. He refused to accept that anyone would be really badly hurt. His family was well versed in minor first aid, and he could fix some things, but Dean wouldn't think about someone being badly hurt enough to warrant a doctor. He could still remember the torturous few minutes he had spent watching Cox try to bring Jo back to life...no, Dean knew he couldn't do that again.
He sighed, the sound impatient and frustrated. "Where the hell is everyone, Sammy?" Maybe Sam had just asked that very question, but Dean had been in his own world. He heard his brother's voice, and it was keeping him sane for the moment, but he wasn't in the mood for drawn out conversations that lasted for very long.