Request for Information (RFI) Title: Persistent Cyber Training Environment (PCTE) Cyber Range Development Software Application Project (Simulated Internet for Cyber Range Training Events [Grey Space]) Issued By: Army Contracting Command Orlando in support of PEO STRI, PM CT2, PdM CRT PCTE Issue Date: 18 June 2026 Response Due Date: 14 July 2026 Introduction The Capability Program Executive Simulation Training, Test and Threat (CPE ST3), Program Manager Cyber Test and Training (PM CT2), Product Manager Cyber Resilience and Training (PdM CRT), Persistent Cyber Training Environment (PCTE) is seeking information from vendors and technology providers regarding a simulated internet capability (often called a Cyber Range or Grey Space Network). The purpose of this RFI is to explore available capabilities with a focus on realism, scale, and control. This RFI is not a solicitation for proposals but rather a means to gather information for potential future procurement. Vendors are encouraged to provide detailed responses that address the requirements outlined below. PCTE is built on a hierarchical, two‑plane architecture: a Control Plane (CP) hosts hardened, accredited services (training portal, help‑desk, dashboards, etc.) and provisions resources, while a logically isolated Event Plane (EP) runs virtual machines, containers, and software‑defined networking to create dynamic cyber‑range environments; the platform is deployed across regional compute/storage (RCS) sites and newer enterprise compute/storage (ENT) sites, leveraging VMware Cloud Foundation, NSX‑T for SDN, F5 edge firewalls, and Red Hat SSO for authentication. Objectives The primary objectives of the simulated internet capability are: To create a realistic and highly scalable cyber range environment / Grey Space Network for cybersecurity training and exercises. To generate realistic background traffic . Capture vendor specify platform's maximum throughput (Gbps) and concurrent session generation limits for background traffic. Assess vendor support for advanced protocol states , specifically: Domain Name System Security Extensions (DNSSEC) validation, Border Gateway Protocol (BGP) hijacking scenarios, Hyper Text Transfer Protocol Secure (HTTPS) inspection/decryption capabilities, and the simulation of localized, autonomous root-CA hierarchies. To integrate with existing and future PCTE on-prem and cloud security tools, network environments, and cloud infrastructure . To ensure high levels of PCTE functionality, security, automation, and reporting capabilities . Concept of Operations 1. Purpose The Simulated Internet within the Persistent Cyber Training Environment (PCTE) provides a realistic, controlled, and isolated network ecosystem that emulates the complexity and unpredictability of the real-world internet. Its primary purpose is to support persistent, scalable, and repeatable cyber training, mission rehearsal, and cyber operations experimentation for military and allied users, without risk …