This interactive force-directed network visualizes connections between eight U.S. cities, with nodes colored by group and labeled with city names. The D3.js visualization uses `d3.forceSimulation` with `forceLink`, `forceManyBody`, and `forceCenter` to position nodes, while SVG lines and circles render the routes and cities. Drag behavior via `d3.drag()` allows users to move nodes, updating the simulation in real time. The chart operates on static, hardcoded data representing conceptual city pairs.