Is there security at the campground?

I saw park rangers and local sheriff patrolling the grounds

There is. I saw some rangers walking. Me and my friends were just playing a whole park game of tag. And we knew we were safe.

All the time you see rangers and staff around the area

there is staff at the park alwats while open and I have seen staff in gulf carts not sure that is deemed security however the place is very safe

Yes