This interactive network graph displays six major US cities as nodes and their connections as links, arranged through a physics-based force simulation. Built with D3.js v7 and a simple HTML script, it uses `d3.forceSimulation` with `forceLink`, `forceManyBody`, and `forceCenter` to position the nodes. Users can drag individual nodes, which updates the simulation and redraws the SVG links and labels in real time.