22 CFR §121.1 Category XVIII
USML Category XVIII: Directed Energy Weapons
USML Category XVIII covers directed energy weapons (DEWs) — systems that damage or destroy targets through the delivery of concentrated energy rather than kinetic projectiles. This category encompasses high-energy laser weapons, particle beam weapons, high-power microwave (HPM) systems, plasma weapons, and associated power conditioning and beam control systems designed for military applications. DEWs are an emerging technology area with increasing military investment and export control attention.
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Founder, ITAR Screen
Trenton is the founder of ITAR Screen and Gideon Dynamics. He built ITAR Screen to give defense contractors and dual-use exporters fast, auditable USML classification and denied-party screening without the complexity of enterprise compliance platforms.
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Coverage
What Category XVIII covers
USML Category XVIII covers directed energy weapons (DEWs) — systems that damage or destroy targets through the delivery of concentrated energy rather than kinetic projectiles. This category encompasses high-energy laser weapons, particle beam weapons, high-power microwave (HPM) systems, plasma weapons, and associated power conditioning and beam control systems designed for military applications. DEWs are an emerging technology area with increasing military investment and export control attention.
Common controlled items
- High-energy laser (HEL) weapon systems and directed-energy effectors
- High-power microwave (HPM) weapons and counter-electronics systems
- Particle beam weapons designed for military engagement
- Laser dazzler systems designed for visual incapacitation
- High-power radio frequency (HPRF) anti-drone defeat systems
- Compact pulsed power systems designed for DEW weapon applications
- Beam director and adaptive optics systems for high-energy laser weapons
EAR / ECCN
EAR overlap
Commercial high-power lasers and microwave sources may be controlled under EAR ECCN 6A005 or 3A001 depending on output parameters. When laser or microwave systems are integrated with targeting, fire control, or weapons delivery systems, or when their power levels are specifically optimized for weapons effects, they cross into ITAR Category XVIII jurisdiction.
Licensing
Typical license requirements
DSP-5 licenses required. DEW technology is at the frontier of U.S. military capability, and DDTC applies heightened scrutiny to transfers. Technical Assistance Agreements are required for co-development work. Many DEW programs involve classified elements that additionally require Category XVII treatment.
Regulations
Key citations
22 CFR §121.1 Category XVIII22 CFR §124 — Defense Services and Agreements22 CFR §125 — Technical Data Licenses
Always verify against the current version of the USML (22 CFR Part 121) on the eCFR. ITAR Screen classifications are versioned against the USML reference at the time of the call.
Primary sources
- DDTC — 22 CFR Parts 120–130 (ITAR)
Official ITAR text administered by the State Dept. Directorate of Defense Trade Controls
- BIS — 15 CFR Parts 730–774 (EAR)
Export Administration Regulations, including the Commerce Control List (CCL)
- OFAC — Sanctions Programs and Country Information
Current SDN list, blocked persons, and active U.S. Treasury sanctions programs
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