In modern-day testing, the directorate must be concerned with how well a new item of equipment works as a system-of-systems within a C4ISR architecture, as well as test its resistance to a complex and evolving threat signal and IA environments. In most tests, these threats to the fidelity and density required of emerging IEW systems must be simulated to measure the adverse effects.

The directorate has one test division which provides special user-testing services in the areas of intelligence, surveillance, reconnaissance, information assurance, and electronic warfare processing systems.

This division is responsible for testing the Army's signals and imagery intelligence, service ground and airborne platforms, reconnaissance (manned and unmanned) aerial vehicles, sensors, and processing systems. It also provides testing support to Intelligence and

Security Command, Special Operations Command, the U.S. Marine Corps, U.S. Air Force, National Security Agency, and to the evaluation of Tactical Exploitation of National Capabilities equipment and procedures.

The directorate's Technical Division, in support of the test division, designs tests that provide fully instrumented threat systems, dynamic scenarios and automated data extraction tools to measure the systems under test.

The directortae uses a variety of instrumentation developed by the it, and scenarios written by subject matter experts to fully explore the mission effectiveness, system performance, suitability, and survivability of systems.

Testing is done in both live, virtual, and simulated environments using the Intelligence Modeling and Simulation for Evaluation capability. The Directorate has an extensive Electromagnetic Environmental Effects threat and instrumentation capability that supports it's assessments of C4ISR systems in an operational environment.