A scatter plot visualizes terrorist reports from April 2003, encoded by date and threat level, with points colored by agency (CIA) and tooltips revealing detailed notes. The visualization is built using the Vega-Lite API, with `vl.markCircle` for marks and `vl.x`, `vl.y`, `vl.color`, and `vl.tooltip` encodings. Data is loaded from a CSV file via `d3.csv`, and interactive tooltips are provided through vega-tooltip. The chart resizes to the window and uses a custom dark theme defined in `config.js`.