A major technological advance for the U.S. Air Force and its Compass Call weapon system. BAE Systems successfully flight tested its Small Adaptive Bank of Electronic Resources (SABER) technology, paving the way for a critical software upgrade to the EC-37B Compass Call, a next-generation electronic warfare aircraft. Teams from both BAE Systems and the U.S. Air Force conducted tests on 11 flights of an EC-130H from Davis Monthan Air Force Base in Arizona. The SABER system is a major technological advance - transitioning from hardware to software-based electromagnetic spectrum (EMS) warfare capability for the U.S. Air Force and its Compass Call weapon system. The system is built on a suite of software defined radios using an open system architecture and will provide the backbone of the EC-37B's operating system.