Some people said they were worried the attack could have been so much worse.
People who saw the dog said it was vicious and out-of-control.
They praised the EMT's quick action for saving others from harm.
Murphy remembers how uneasy he felt looking into the eyes of a snarling pit bull that bit his grandson last month in Glencoe.
"The bite was big enough where you could put your thumb into it all the way down to the bone," he said.
Murphy said his 16-year-old grandson was meeting some friends at a park just steps from his house.
The estimated 80-pound dog was loose and Bobby Nunn with Gallatin County Animal Control said it was angry.
"If it was a small kid, they wouldn't have had a chance cause he had some big teeth and some tough jaws," he said.
Murphy said Gallatin County EMTs were tending to the 16-year-old.
"He said, 'Yeah, take me to the hospital, let's just do this and get it over with,' not like a normal kid (who) would like be hysterical or passing out on you," Murphy said.
The animal started heading their way.
"The EMS had a gun and he was backing up, he wasn't going to shoot it, I told him, I said 'shoot it' because it's going to get us all," Nunn said.
He said the EMT shot the dog and killed it.
"I was just lucky the guy that had the pistol was there and shot the dog for me," Nunn said.
It was a close call.
Murphy said he's just grateful that, in a county where resources are limited, an EMT was armed and ready.
Gallatin County EMS officials wouldn't comment on the situation or any of their policies.
No, no, no.
He said Gallatin County Animal Control cited the owner of the pit bull.
Nunn said the owner is expected in court next month.
(WLWT5 - Feb 17, 2017)