... simulation is also benefiting from object-oriented technologies. Simulations were once stand-alone codes. If one wanted to simulate a joint battle, one began with an existing model (i.e., land combat) and then modified it to include other components (i.e., aircraft and ships). Similarly, if a new technology were ... — Shock and Awe - Achieving Rapid Dominance • Harlan K. Ullman and James P. Wade