This is what happened in the novel where they showes Grayson monologue as well:
They were in there for few minutes, this is a burning building and it's Grayson's first time going there. He did try to convince Dane that they should get out cs he was sure the dog was dead (this was bfr they found out about the attic) then the info about the attic comes and Dane tells Greyson to leave and he goes to the attic. He thought that he'd done enough and wanted to leave so it wasn't bad but Dane's tone made him feel unpleasant. Then there's a crack/explosion and some other part of the house falls down and he leaves. Which does make a lot more sense bc at the end of the day this is a burning house and he's not even trained he nepo-babied his way into this shi. He also thought that Dane was just acting out and by the time he goes out Dane would be able to go out bc no way he'd risk his life for a dog whose chance of survival was too low. By the time Greyson goes out it's been 15 minutes since they entered which is a long a*s time to stay in a burning building. "Watching them, Greyson thought it was just pathetic. He would come out on his own soon anyway. How long could he endure in those flames? Why were they making such a fuss when they could just wait for him to come out on his own?" Fire fighters were busy blaming Greyson so he told them to go inside that dangerous hell if they are that worried. So to show him, the rest were about to go when in but then there's another sound and half the house collapses after that. While all that is happening Dane was still looking for Charlie he didn't just find him in the attic he had to look for him there. It was only after half the house collapsed that Dane saw the ventilator and pulled it apart. It also took some time for him to pull it apart. "Greyson slightly furrowed his brow. He goes that far? Why? Despite his violent coughing, Dane steadfastly gave up his mask to the dog and waited for his colleagues to bring a ladder. Greyson continued to watch him."
And he was genuinely curious bc he has never seen someone doing this.
This is what happened in the novel where they showes Grayson monologue as well:
They were in there for few minutes, this is a burning building and it's Grayson's first time going there. He did try to convince Dane that they should get out cs he was sure the dog was dead (this was bfr they found out about the attic) then the info about the attic comes and Dane tells Greyson to leave and he goes to the attic. He thought that he'd done enough and wanted to leave so it wasn't bad but Dane's tone made him feel unpleasant. Then there's a crack/explosion and some other part of the house falls down and he leaves. Which does make a lot more sense bc at the end of the day this is a burning house and he's not even trained he nepo-babied his way into this shi. He also thought that Dane was just acting out and by the time he goes out Dane would be able to go out bc no way he'd risk his life for a dog whose chance of survival was too low. By the time Greyson goes out it's been 15 minutes since they entered which is a long a*s time to stay in a burning building.
"Watching them, Greyson thought it was just pathetic. He would come out on his own soon anyway. How long could he endure in those flames? Why were they making such a fuss when they could just wait for him to come out on his own?"
Fire fighters were busy blaming Greyson so he told them to go inside that dangerous hell if they are that worried. So to show him, the rest were about to go when in but then there's another sound and half the house collapses after that. While all that is happening Dane was still looking for Charlie he didn't just find him in the attic he had to look for him there. It was only after half the house collapsed that Dane saw the ventilator and pulled it apart. It also took some time for him to pull it apart.
"Greyson slightly furrowed his brow.
He goes that far? Why?
Despite his violent coughing, Dane steadfastly gave up his mask to the dog and waited for his colleagues to bring a ladder. Greyson continued to watch him."
And he was genuinely curious bc he has never seen someone doing this.