FEMA's Pre-Disaster Mitigation Program: Overview and Issues [Updated August 27, 2014] [open pdf - 1MB]
From the Program Purposes: "The purpose of the original pre-disaster hazard mitigation pilot program, known as Project Impact, as well as the successor Pre-Disaster Mitigation (PDM) program, has been to implement hazard reduction measures prior to a disaster event. Those measures are similar to those actions taken following a disaster under the authority of the Section 404 Hazard Mitigation Grant Program (HMGP). The range of eligible projects might include retrofitting public buildings against hurricane-force winds or seismic damage, acquiring and relocating properties out of a flood plain, elevating structures in a flood plain, flood-proofing public buildings, managing vegetation to mitigate against wildfires, or constructing or converting public spaces into 'safe rooms' in tornado-prone areas."
CRS Report for Congress, RL34537
Congressional Research Service: https://crsreports.congress.gov/