Army Capt. Ryan Berg, Task Force Power Restoration Material Manager, converses with teammates on "Bill of Materials" data at the Puerto Rico Electric Power Authority headquarters building, San Juan, Puerto Rico, March 7, 2018, during support operations for the TFPR mission. As designated by FEMA, the U.S. Army Corps of Engineers leads the federal effort for emergency temporary power restoration in Puerto Rico after Hurricane Maria devastated 80 percent of the island's power grid. The Defense Logistics Agency provided the materials for the mission.