SAN DIEGO. Cubic Defense reports that it signed a contract modification with Naval Air Systems Command (NAVAIR) to provide engineering support services for a demonstration in Guam, Valiant Shield ‘24; Valiant Shield is a biennial U.S. warfighting training exercise that takes place around Guam with participation from the Navy, Army, and Air Force that focuses on integration of joint training among U.S. and partner-nation forces in relation to current operational plans.