OneArc (formerly BISim)
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OneArc (BAE Systems OneArc), formed in 2025 from Bohemia Interactive Simulations (BISim) and Pitch Technologies, is a wholly owned subsidiary of BAE Systems, Inc. that makes simulation, interoperability and geospatial software, including VBS, Mantle, Pitch and Blue IG.
| Website | https://onearc.com |
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| Headquarters | Not published. |
| Founded | OneArc was founded in 2025 through the merger of Bohemia Interactive Simulations and Pitch Technologies. |
| Ownership | OneArc is a wholly owned subsidiary of BAE Systems, Inc. |
| In this guide | Drones, counter-drone, EW and space |
This profile uses the same fields and length limits as every other provider in the guide, drawn from OneArc (formerly BISim)’s own materials and public records.
Drones, counter-drone, EW and space
Products named: FlowState; FlowState FPV Drone Trainer; VBS4
| What they offer | OneArc offers FlowState, a portable FPV drone trainer with laptop, goggles and controller that OneArc says spans basic flight to ISR, electronic warfare and combat tactics (first module available, more planned), and VBS4 desktop simulation, which it says models over 50 drone systems. |
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| Who they serve | OneArc serves militaries and integrators; it names the U.S. Army and Marine Corps among its customers, the U.S. Air Force Academy for RPA training, and the UK MOD for FlowState. |
| How it is delivered | OneArc ships FlowState as a rugged-case kit with laptop, FPV goggles and controller, and VBS4 as desktop software that can stream drone video to real ground control stations. VR headset: yes; Desktop or browser: yes; Mobile: not published; Offline: not published; Classified: not published |
| Assessment and analytics | OneArc says VBS4 replays scenarios in 2D and 3D and saves performance measures automatically for after-action review, with data exportable to other training tools, and FlowState includes post-flight battle damage assessment. |
| AI features | OneArc says VBS4 lets users plan missions and issue orders to AI-controlled forces, and that customers use VBS4 drones to train autonomy software with synthetic imagery. |
| Notable public programs and contracts | OneArc's case study says the U.S. Air Force Academy used VBS3 for virtual remotely piloted aircraft scenarios in a military strategic studies course, and OneArc said in August 2026 that the UK MOD bought FlowState and SceneCast licenses under its DVS2 framework for trials. |
| How to buy | Not published. |
Compare with other providers of drones, counter-drone, EW and space
Sources
- BISim and Pitch are now OneArc.. BAE Systems OneArc, November 11, 2025. Retrieved October 21, 2026.
- Remotely Piloted Aircraft and Air Operations Center Training. BAE Systems OneArc. Retrieved October 21, 2026.
- FlowState. BAE Systems OneArc. Retrieved October 21, 2026.
- VBS4. BAE Systems OneArc. Retrieved October 21, 2026.
- Leverage VBS4 for Drone Experimentation and Training. BAE Systems OneArc, May 31, 2023. Retrieved October 21, 2026.
- UK MOD Procures FlowState and SceneCast Licenses for Training. BAE Systems OneArc, August 31, 2026. Retrieved October 21, 2026.