United States Army Test and Evaluation Command
ATEC is the Army’s independent tester. It runs the developmental and operational test enterprise, the proving grounds and missile ranges, and the evaluation reports that milestone decision authorities rely on. Its motto is “Truth in Testing,” and its independence is the point: it does not report to ASAALT, so its findings cannot be adjusted by the program office whose system is being tested.
| Field | Value |
|---|---|
| Type | Direct Reporting Unit (DRU) |
| Headquarters | Aberdeen Proving Ground, Maryland |
| Commander | Patrick_L_Gaydon, Major General |
| Subordinate to | US_Army / Headquarters, Department of the Army |
| Established | October 1, 1999 |
| Workforce | ~9,000 military, civilian, and contractor personnel; 2,000+ tests annually |
Mission
ATEC plans, conducts, and reports independent developmental testing, operational testing, and system evaluation of Army materiel. It provides the evaluation that informs Defense_Acquisition_System milestone decisions and fielding recommendations, and it supports the Director_Operational_Test_and_Evaluation at OSD for programs on the DOT&E oversight list.
Independence is structural: ATEC reports outside the acquisition chain so that its evaluators are not rated by the people whose programs they assess.
Subordinate Organizations
- Army_Evaluation_Center (Aberdeen Proving Ground, MD) - system evaluation and reporting
- Operational_Test_Command (Fort Hood, TX) - operational testing with soldiers in realistic conditions; test directorates at Fort Bragg, Fort Bliss, Fort Sill, and Fort Huachuca
- Aberdeen_Test_Center (Aberdeen Proving Ground, MD) - ground vehicles, armaments, ballistics
- White_Sands_Test_Center (White Sands Missile Range, NM) - missiles, air defense, electromagnetic environment
- Yuma_Test_Center (Yuma Proving Ground, AZ) - desert environment, artillery, aviation, air delivery
- Dugway_Proving_Ground (UT) - chemical and biological defense testing
- Redstone_Test_Center (Redstone Arsenal, AL) - aviation and missile systems
- Electronic_Proving_Ground (Fort Huachuca, AZ) - C4ISR, spectrum, and electronic warfare
- Cold Regions Test Center (Alaska) and Tropic Regions Test Center
Why it matters
ATEC can kill your program, and it is the only organization in the Army whose job that is. An unfavorable operational test and evaluation report stops a full-rate production decision. Any company approaching a milestone needs to understand the test plan, the measures of effectiveness, and the evaluation criteria long before the test event - ideally by engaging ATEC evaluators during requirements development, which the acquisition system explicitly permits.
Test infrastructure is itself a market. Instrumentation, telemetry, targets, threat surrogates and emulators, range safety systems, data collection, and modeling and simulation are procured to equip the ranges. CPE_Simulation_Training_Test_Threat under ASAALT owns much of that acquisition.
Range access is a service you can buy. ATEC’s proving grounds sell test services on a reimbursable basis to other services, other agencies, allied governments, and commercial customers. For a company that needs live-fire, environmental, or electromagnetic testing it cannot do itself, Yuma, White Sands, Dugway, and Aberdeen are the facilities.
Software and AI testing is unresolved. The Army’s shift to continuous software delivery and machine-learning-enabled systems does not fit a test regime built for tanks. How ATEC evaluates a model that changes weekly is an open policy question with direct consequences for any software vendor pursuing a program of record.
Reporting relationship note. CRS lists ATEC as one of the Army’s fifteen Direct Reporting Units as of December 2025. Some Army materials describe it operating in close alignment with T2COM following the Army_Transformation_Initiative. Verify the current reporting line before relying on it in a proposal.