From Edge of Darkness Wiki
Emotional Detachment
Your character can distance himself from the pain, grief and suffering of his fellow human beings long enough to help them. This might make him seem somewhat aloof, but it also means that he doesn’t second-guess himself when performing delicate surgery. The character ignores penalties stemming from stress equal to his
Resolve rating. For instance, if an EMT is trying to perform an emergency tracheostomy while in a moving car with a werewolf on the roof, the EMT might normally suffer a –2 penalty from sheer emotional pressure. If he had this Merit and his Resolve were 2 or higher, he would take no penalty at all.