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1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteThe Army can simulate some electronic-warfare effects without transmitting interference, and it also evaluates counter-drone systems in controlled facilities and coordinated field scenarios. These are different kinds of tests: a non-radiating network emulator can show how communications behave under simulated jamming, but it does not prove that a live jammer will defeat a drone or that every counter-UAS test avoids radio emissions.
How can the Army simulate jamming without interfering with communications?
One public example is the Army’s real-time network effects emulator, or RNEE. During Ivy Mass in April and May 2026, the DEVCOM C5ISR Center used it while assessing the Army’s Next Generation Command and Control network with the 4th Infantry Division. The emulator was installed in line with tactical vehicle communications and created simulated denied, degraded, intermittent, and limited (DDIL) conditions.
The Army said RNEE mimicked radio-frequency jamming without radiating into the spectrum or disrupting live satellite and commercial cellular networks. In practical terms, personnel could experience communications outages, exercise primary, alternate, contingency, and emergency (PACE) plans, and let evaluators observe how network traffic was routed and whether mission command continued.
This is evidence about network behavior under simulated communications denial—not a test of whether a live counter-drone jammer physically disables a drone. The Army’s public account does not say RNEE tests every counter-UAS function or replaces live testing.
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How are counter-drone sensors and effectors tested in field scenarios?
At the Warden event at Fort A.P. Hill, the Army conducted a collaborative government-industry assessment of non-kinetic counter-UAS technologies. Over about a week and a half of reported data collection and field assessments, 17 industry partners participated. Systems under evaluation included lasers, radio-frequency jammers, and an interceptor unmanned aircraft system.
The systems faced more than a dozen UAS types and realistic attack patterns, including a simulated swarm. This kind of field assessment can examine how systems detect, identify, track, and respond to targets in scenarios that involve actual equipment and operational workflows. Unlike RNEE’s non-radiating simulation, a field evaluation of an RF effector may involve live emissions; the public account does not publish its emission controls or spectrum coordination procedures.
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Warden participants compared reported detections with actual UAS flight paths to establish ground truth. The Army also said the assessment used its Standard Guidelines for Test and Evaluation of Counter-Unmanned Aircraft Systems Technologies to make results more comparable. The Army reported progress in longer-standoff detection and identification, sensor-algorithm resilience, information sharing among sensors, soldiers, and command-and-control systems, and ease of use for dismounted squads. Those are Army-reported event outcomes, not independent proof of operational effectiveness.
How do laboratory and range facilities fit into the process?
The Army Electronic Proving Ground (EPG), part of the Army Test and Evaluation Command, describes testing across developmental, operational, user, and experimental needs for network, electronic-warfare, and C5ISR systems. Its methods include bench work, laboratory evaluation, field testing, and geographically distributed systems-of-systems tests, with live and simulated instrumentation.
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EPG identifies a naturally quiet electromagnetic environment and specialized test facilities as useful capabilities. Its facilities include electromagnetic-environmental-effects testing and communications and network test beds. Controlled environments can help characterize equipment and isolate variables; field scenarios can expose systems to targets, conditions, and workflows that a laboratory setup may not reproduce. Neither approach is a universal substitute for the other, and the Army’s public descriptions do not establish that every counter-UAS event—Warden included—takes place at EPG.
| Approach | What it can assess | What it does not establish by itself |
|---|---|---|
| Non-radiating simulation, such as RNEE | How communications and network operations respond to simulated denial or degradation. | Whether a live RF jammer defeats a drone, or whether all counter-UAS functions work. |
| Controlled laboratory or range testing | System behavior under defined test conditions, including electromagnetic effects and communications or network performance. | How every system will perform in every operational environment. |
| Field assessment, such as Warden | Detection and defeat capabilities against varied targets and attack patterns, with results checked against flight-path ground truth. | A general guarantee of effectiveness, or a public account of all emissions and coordination controls. |
| Coalition experimentation, such as Project Flytrap | Sensor and defeat capabilities, data flow, and interoperability in multinational settings. | Universal compatibility or adoption across all systems and partners. |
EPG also describes large test areas: 70,000 acres at Fort Huachuca, 23,000 acres at Wilcox Dry Lake, and more than 100,000 acres at Gila Bend. These are facility footprints reported by EPG, not measurements of test accuracy or proof that emissions cannot affect areas beyond a range.
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Why test data sharing and coalition interoperability?
A counter-drone system must do more than sense or engage a target: its information needs to reach the people and systems making decisions. Project Flytrap is a recurring European Army experimentation series evaluating passive and active sensors and defeat capabilities against Group 1–3 UAS in coalition environments.
In Project Flytrap 4.5, the Army assessed the Integrated Sensor Architecture (ISA), a framework intended to connect sensor data and networks across domains, services, and coalition partners. Earlier iterations exposed limitations when multiple sensors and real-time data loads were integrated. The Army describes ISA as a way to improve data flow, not as a universally adopted system or proof of compatibility with every vendor. Russell Nadler, a technical program integrator with CPE IEW&S’ Integration Directorate, described the goal as a “plug and play environment” in which partner nations can contribute sensor data to a common operating picture.
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What is publicly known about protecting nearby spectrum users?
The Army’s RNEE example is specific: its simulated jamming did not radiate or disrupt the live satellite and commercial cellular networks named in the Army account. Public descriptions of other test activity establish that the Army conducts controlled facility work and realistic field assessments, but they do not provide exact spectrum limits, emission controls, monitoring thresholds, or range-coordination steps for live counter-UAS jamming or directed-energy tests.
A 2024 Senate Armed Services Committee report directed the Department of Defense to assess test-range capabilities, FAA and NTIA policies, spectrum-analysis tools, and possible effects beyond range boundaries for directed-energy testing. That direction is a request for an assessment, not a published Army operating procedure or a set of spectrum thresholds. It should not be read as evidence that all live RF emissions are tested without coordination or that ranges eliminate off-range effects.
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