DOE/Argonne National Laboratory A cross-platform Argonne collaboration is optimizing a tool developed after Hurricane Maria to find essential connections between critical infrastructure that will help owners and operators plan for and mitigate a variety of potential hazards. Major disasters, whether natural or human-caused, most often have a devastating impact on local infrastructure that can result in the interruption of humanitarian efforts and deal an economic blow to communities large and small. No matter where you are in the world, these infrastructures are intimately linked, so that the failure of one can have a cascading effect on others. Unfortunately, the details of how they're interconnected isn't always fully mapped out, making it hard for communities to determine which to bring online first after a disaster. However, Argonne is developing resources to help make the connections between the electrical grid and other lifeline infrastructure -- natural gas, clean water, healthcare, communications and so on -- and aid in those critical and timely decisions.