Read Chapter 1. The Disaster Recovery Assistance Framework from Gavin Smith's book, Planning for Post-Disaster Recovery
https://islandpress.org/books/planning-post-disaster-recovery#desc
"A remarkably thorough and readable explanation of the non-system of planning for recovery that exists in the U.S. and ways to improve it... This book is a must-read for anyone who might wind up dealing with the aftermath of a disaster."
Planning