I agree about it being different things for different people.
I also agree with Astrid about it depending on your type of locale.

For me it involves my mates, the wider police family, and it also includes others who are involved either directly or indirectly to help me raise my kids and enjoy my family. The people in my village are also there to support DH and I.
Our families can't help from 2500km away but they help us through venting/encouragement/advice/whatever we need. They cheer me up when I am lonely, they tell me to get real, and they drop everything to come to special stuff like DS first day at school.
My mates are for me as much as for the kids. I have an awesome group of really close friends. Our kids don't always get along, but between 6of us there 22kids so there's always someone to play with lol. I enjoy being a part of their village as much as I love them in mine.
Our police family look after us when things are good and bad.