While pet guardians should always be prepared, we should not fear all first responders.
When I was an animal shelter worker, I often saw police people bring in stray animals.
Although stories of pets getting hurt are more likely to make the news, I was able to find some stories of law enforcement personnel who helped pets:
Ariz. Trooper Rescues Small Dog From Highway
Sheriff braves fire to save couple's dog
Police Officer Adopts 'Vicious' Pit Bull
Tiny Puppy Steals the Heart of Deputy Who Rescued Him
Texas Police Officer Shuts Down Highway to Save Dog
This is just a sampling of all the stories that I was able to find. And of course there are many more stories of compassion that don't make the news.