Customers
- Marine Corps Tactical Systems Support Activity (MCTSSA)
- ETSI is a prime contractor in support of US Marine Corps C2 systems
- Science Applications International Corporation (SAIC)
- ETSI is a subcontractor on a SPAWAR contract
- ETSI was a subcontractor in support of State of California Healthcare IT studies
- ETSI was a subcontractor on a Naval Surface Warfare Center Crane, IN US Air Force project
- Northrop Grumman Technical Services (NGTS)
- ETSI was a subcontractor on a US Navy aircrew training systems/range maintenance contract
- ManTech Systems Engineering Corporation
- ETSI is a subcontractor on a US Navy SPAWAR Institute training contract