One way for communities to secure their food supply for citizens
would be to sponsor a community farm and greenhouse.
Same with a safe water resource.
Same with fuel for emergency vehicles.
Same with generators for a community center
in case of long term blackout.
The more citizens a community has,
the more donations of time and money.
If it gets bad or not
all these things would never be wasted.
It would require a logistics analysis on who gets what
and how much is needed.
If a greenhouse is made with a thick ml plastic
and kept clean
it can last for years.