It is far, far, far more important to start where you are than where you want to be.
The method used here is informed by a good Business Continuity Management - Capability Maturity Model
Neighborhood emergency response and recovery is all about developing capabilities.
Taking on the task of capability development can be guided by what are called "capability maturity models" (CMM).
We found a good one that, although focused on business continuity management, the key principles behind its design are useful here.
Perhaps the most important learning from CMM is to clearly understand the difference between what is to be worked on now, and the ultimate goal in capability development. Most capability maturity models have multiple levels of maturity (often 0 through 5).
Level 5, named differently in each CMM, helps envision the ultimate objective, but, if you're operating a Level 0 or 1, its far more important to follow the tasks to move just to the next level.
All good maturity models have two dimensions: support and pervasiveness
Support, in the business context, means management support.
Pervasiveness includes percent of the organization participating AND the degree to which its integrated and focused on business scenarios.