CCTT is a networked training simulation system being developed for the U.S. Army STRICOM through a series of seven incremental builds. These builds will progressively add system components and increase the complexity of components delivered in previous builds. Each build will integrate the previously built system with newly delivered hardware and software components into a system which is partially functional. Total system functionality incrementally increases until at the conclusion of build seven the system is complete and can enter qualification testing. To increase assurance that system testing will be successful and that CCTT is ultimately training effective, a user assessment of each incremental build is conducted. These assessments are conducted in the context of operational user exercise scenarios with Army users. Each scenario is designed to train those collective tasks which can be performed using the technical capabilities provided by the system functionality in the CCTT system built thus far in the program. The user exercises provide both a checkpoint on progress toward meeting the technical requirements of the CCTT program and a way to assess the system's training effectiveness. Training effectiveness is assessed based upon collective tasks which are going to be evaluated for training transfer during the system's initial operational test and evaluation (IOT&E). The approach supports a continuous test and evaluation philosophy while gauging the training effectiveness of a system throughout its development. The methodology used in CCTT is key to integrating a user focus into a concurrently engineered training system being incrementally developed.