The Inter-Vehicle Embedded Simulation Technology (INVEST) program is dedicated to providing onboard simulations in support of training exercises for tactical vehicles. For a particular vehicle, the onboard simulation is used to provide a virtual model of the vehicle, which then interacts with other virtual vehicles being used in the exercise. The Synchronized Player Model (SPM) part of the INVEST program was conceived to reduce the wireless communications bandwidth between the embedded simulations being used in a coordinated training exercise. This is done by synchronizing the simulations using a high-level behavior command interface, as opposed to the simple dead reckoning techniques currently used by most distributed simulations. In this paper, we describe the prototype development and preliminary results of a set of experiments where we use a software control algorithm for maintaining synchronization. We develop these experiments starting with a baseline system, consisting of the standard dead reckoning algorithms now in use, and compare our results against this known standard. The results indicate promising reductions in bandwidth requirements versus location fidelity errors for an SPM Phase 2 prototype testbed. Future work includes extending SPM synchronization concepts to unit level formation behaviors and the development of a prototype embedded SPM testbed suitable for the INVEST program.