COD4 and World at War both use baked shadowmaps at long distances that fade into real-time shadows at close distances, but for the life of me I can't see that happening in Modern Warfare 2 at all. I'm pretty sure like 95% of it is real-time, if not 100%. The only cases I'm unsure of are what look like a few instances of based occlusion in interiors, but I'm hoping I'm wrong on that