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Green Hills Software Operating System Selected by Collins Aerospace for U.S. Navy Tactical Combat Training System Increment II Solution

INTEGRITY-178 operating system provides proven MILS architecture, ability to host MLS applications, and virtualization of legacy Linux applications

TCTS Inc. II is interoperable for joint and coalition training with fourth- and fifth-generation platforms (image courtesy Collins Aerospace).

SANTA BARBARA, CA — January 21, 2020 — Green Hills Software, the world-wide leader in high-assurance operating systems, today announced that its INTEGRITY®-178 Time-Variant Unified Multi-Processing (tuMP™) RTOS for the Xilinx® UltraScale+™ FPGA has been selected by Collins Aerospace for the U.S. Navy’s Tactical Combat Training System Increment II (TCTS Inc. II) program. Key factors in the selection of INTEGRITY-178 tuMP were its proven Multiple Independent Levels of Security (MILS) architecture, its ability to host Multi-Level Security (MLS) applications such as Cross Domain Solutions (CDS), its ability to host a guest OS and legacy applications in a secure virtualized partition, and its conformance to the Future Airborne Capability Environment (FACE™) 3.0 Technical Standard.

“Green Hills Software is proud to be selected by Collins Aerospace for the TCTS Inc. II program,” said Dan O'Dowd, founder and chief executive officer of Green Hills Software. “As a part of a comprehensive defense against adversaries who increasingly attack U.S. and Allied deployed electronic systems, the INTEGRITY-178 tuMP RTOS is the clear solution as more programs of record utilize an MLS operating system capable of complying with Common Criteria EAL 6+ assurance requirements and the SKPP.”

Collins Aerospace’s TCTS Inc. II solution enables the rapid adaptation of new missions and threats into training as well as joint and coalition interoperability with fourth- and fifth-generation aircraft platforms. The ability for the Navy and Marine Corps to rapidly advance future technology insertions is due to Collins Aerospace’s open architecture design and use of industry standards including alignment with the FACE™ Technical Standard.

The INTEGRITY-178 tuMP high-assurance RTOS is a critical part of a CDS solution with an unequalled security-critical pedigree. The INTEGRITY-178 RTOS is the only commercial operating system ever certified to the Separation Kernel Protection Profile (SKPP) published by the Information Assurance Directorate of the U.S. National Security Agency (NSA). That certification was done by the National Information Assurance Partnership (NIAP) to Common Criteria EAL 6+ “High Robustness.” The INTEGRITY-178 tuMP RTOS was also the first operating system certified conformant to latest revision of the FACE Technical Standard, edition 3.0, and it is still the only operating system that meets all of the multicore requirements defined in the FACE 3.0 Technical Standard.

About Green Hills Software
Founded in 1982, Green Hills Software is the worldwide leader in embedded safety and security. In 2008, the Green Hills INTEGRITY-178 RTOS was the first and only operating system to be certified by NIAP (National Information Assurance Partnership comprised of NSA & NIST) to EAL 6+, High Robustness, the highest level of security ever achieved for any software product. Our open architecture integrated development solutions address deeply embedded, absolute security and high-reliability applications for the military/avionics, medical, industrial, automotive, networking, consumer and other markets that demand industry-certified solutions. Green Hills Software is headquartered in Santa Barbara, CA, with European headquarters in the United Kingdom. Visit Green Hills Software at

Green Hills, the Green Hills logo, INTEGRITY and tuMP are trademarks or registered trademarks of Green Hills Software, in the U.S. and/or internationally. All other trademarks are the property of their respective owners.

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