This visualization shows flight paths between US airports using edge bundling, with a basemap of the continental United States rendered as projected SVG paths. Airport positions are marked with scaled circles, and a Voronoi diagram enables interactive highlighting of individual airports. The code uses d3.json, d3.csv, and Promise.all to load topojson map data and CSV flight/airport datasets, then filters and sorts the data to display the top 50 airports. d3.geoPath, d3.geoAlbers, and d3.scaleSqrt are used for map projection, path generation, and bubble sizing.