Lockheed Martin's is not available as a free download. It is a paid, commercial-off-the-shelf simulation platform available strictly through digital download after a license purchase. Licensing and Pricing Structure
: Used for advanced training where complex combat scenarios may be rehearsed. Prepar3D V4 Free Download
: Intended for students in K-12 or undergraduate programs. It provides the same functionality as the professional version but includes a small watermark in the upper right corner of the window. Lockheed Martin's is not available as a free download