JP 3-28, page 83

Supporting and Sustaining Activities V-9 actively conducting DSCA operations within the joint operations area (JOA) along with Title 10, USC, engineer forces. 3. When required, DHS and USACE are designated the ESF primary agency for ESF #3 (Public Works and Engineering). USACE is the coordinating agency for ESF #3, and DOD is designated a supporting agency. USACE is a supporting agency for ESF #6 (Mass Care, Housing, and Human Services). USACE maintains LNOs at both USNORTHCOM and USINDOPACOM to assist in providing a common operating picture at the CCMD level and ensure close coordination between the USACE and the supported CCDR on USACE operational roles and missions during disaster response. Under Title 33, Code of Federal Regulations, Part 203, USACE authority also includes response to flooding incidents. (b) General Priority of Engineer Actions. Military engineer capabilities can be requested and presented to support USACE, a JTF at the state or regional level, or other USG departments or agencies. Based upon the type of mission and the requested support, the tasks may differ, but the general priority is: 1. Force beddown with FP considerations. 2. Emergency stabilization and repair of damaged critical infrastructure. Repairs/work-arounds to other critical public utilities, services, and facilities that will help restore the ability of the local authority to manage its own recovery efforts. 3. Emergency clearing of debris from streets, roads, bridges, airfields, ports, and waterways in support of recovery and humanitarian needs. 4. Immediate humanitarian needs of the dislocated populace, such as the construction of temporary shelters and support facilities. 5. Demolition of damaged structures and facilities that pose a significant risk to the public. (c) Construction Policy. IAW FEMA doctrine and policy, construction in conjunction with domestic disaster response is normally performed by commercial contractors, and new construction during DSCA operations should not be expected as DOD is normally prohibited from performing services where viable commercial vendor support is available. However, when new construction is authorized, adherence to all federal, state, and local codes and standards should be anticipated. Use of Service construction standards, planning factors, development priorities, and cost estimates are encouraged. Expedient construction should be considered. Expedient construction includes several types of rapid construction techniques such as prefabricated buildings, inflatable buildings, and clamshell structures. These construction techniques can be selectively employed with minimum time, cost, and risk and offer deployed forces another source of required temporary facilities. Temporary facilities may be required or requested in certain cases during the initial phase of operations or in support of the federal agency with lead responsibility.