The U.S. Army is seeking industry solutions to modernize its Synthetic Training Environment (STE) by delivering a Virtual Software (VSW) suite that enables live‑fire gating, combined‑arms training, full mission‑command concurrency, and an open, extensible architecture. The effort is divided into five Lots: (1) Core simulation platform with SDK/APIs, (2) Plug‑in applications, (3) Hardware‑in‑the‑Loop integration, (4) Training management and after‑action review analytics, and (5) Enterprise Integration Support including a contractor‑furnished Software Integration Laboratory in Orlando, FL. Solutions may be COTS, GOTS, or hybrid, must meet TRL 8/9, support OneWorld Terrain, and adhere to MOSA, cybersecurity, and data‑rights requirements. The solicitation includes an Industry Day (22‑24 Sep 2026), a solution submission deadline (13 Oct 2026 for Lots 1, 3, 5), down‑select notifications (19 Oct 2026), demonstration pitches (3‑5 Nov 2026), and award (20 Nov 2026). The prototype phase is expected to last nine months, after which a follow‑on production award may be issued.
• Lot 1: Core simulation engine, 60 Hz tick, 90 Hz frame, 20 ms latency, 50 k entities, open SDK/APIs, user scripting.
• Lot 2: Modular “app store” applications built on Lot 1 SDK.
• Lot 3: HIL integration of RVCT hardware via HAPI/HAL.
• Lot 4: Instructor tools, real‑time data capture, automated AARs, analytics.
• Lot 5: Contractor‑furnished SIL facility, network, security, CI/CD pipeline, conformance testing.
• Key dates: Draft posting 27 Aug 2026, Industry Day 22‑24 Sep 2026, final posting 15 Sep 2026, submission 13 Oct 2026, award 20 Nov 2026.