You might want to take a look at Facets 3D models (http://facets3dmodels.com/). They specialize in models for military training simulators. The models are available in OpenFlight, VTree, and 3DS formats. (The first two formats aren't terribly useful unless you're doing simulation, but 3DS is fairly easy to convert to OBJ format.) If you email them, you can get a sample kit comprising five of their models: an American helicopter, a Russian fighter plane, a hummer, and French and Russian battle tanks. Of course, you can't use them for commercial uses, but it would let you get an idea if the models are suitable for your needs. You may find that these models have less details than you need, as they are designed for quick rendering when you are simulating a whole battlefield of them. If they don't do the job, you might check out the database at http://www.vis-sim.com ("The Visual Simulation Resource"). If you look under Resources, Data, then Models, there is a whole list of companies that make models for military simulation. Hope this helps. Lynn Grant Castle Development Group