What Makes You Valuable To A Community

Just for fun The power's off.
Grocery stores are empty. Gas stations dry.
You alone, and/or YOU and your family
come across this full operational off-grid functioning
homestead community.
You’re only granted access if you have a skill or trade
that would benefit this community !
- Otherwise you have to keep walking past this place.
so, what are your skills and/or trade
that would make you a valuable asset,
and, worth feeding, housing & keeping you,
how, could you help protect this community ???
LOOKING FORWARD to INTERESTING ANSWERS !!!