Airborne 1 Corporation released QT Modeler 4.0, the latest application in its suite of 3D LiDAR visualization software. The new version offers users an efficient tool for importing, viewing and analyzing LiDAR and Synthetic Aperature Radar (SAR) data. QT Modeler 4.0 provides an enhanced modeling and analysis package that can build surface models from raw data (e.g., ASCII XYZ or LAS) in minutes, visualize 3D models in real-time, perform critical analysis in seconds, overlay aerial photography, and export to a variety of other software packages for further analysis. The package requires no additional or underlying software, and will process and display point clouds of up to 200 million points. New features designed for QT Modeler 4.0 include: flood plain simulation, change detection, slope analysis, volume calculation, support for State Plane Coordinates, multiple cross section export, and many other enhancements. A link to a free 30-day trial of QT Modeler 4.0 can be accessed at\qt.html. (Airborne 1, El Segundo, Calif.)