Share this article Share this article SANTA BARBARA, Calif., March 5, 2021 /PRNewswire/ -- Green Hills Software, the worldwide leader in high-assurance operating systems, today announced that its INTEGRITY ®-178 Time-Variant Unified Multi-Processing (tuMP™) RTOS is being used by Collins Aerospace to meet the NSA's Raise the Bar (RTB) initiative for Cross Domain Solutions (CDS). Collins is using the INTEGRITY-178 tuMP real-time operating system (RTOS) in the small form-factor, tactical CDS that is being deployed on the U.S. Navy's Tactical Combat Training System Increment II (TCTS II) program and is targeted for the U.S Air Force's P6 Combat Training Systems (P6CTS). Collins said INTEGRITY-178 tuMP made this Raise the Bar CDS certification approval possible by "uniquely meeting the functionality requirements of the Navy's TCTS II CDS and security assurance requirements of RTB."