How could they forget?

[samwinchestermustdie]

I don't think they forgot but Nathan was dead when they got there so it's not like Claire's blood can bring back someone from the dead, it can bring you back from the brink of death or from being seriously injured, but I didn't think it would bring someone back once they'd been dead for a bit....

Definetly wrong about that. HRG was dead. Unless you're lucky(or unlucky really)a bullet to the head doesn't just injure you. It freakin kills you!