Defend the Republic University students compete in the Defend the Republic competition, an Office of Naval Research-sponsored event featuring lighter-than-air vehicles, in Arlington, Va., Aug. 1, 2024. SHARE: Download: Full Size (1.12 MB) Tags: technology, Navy Credit: Courtesy Dr. Ningshi Yao, George Mason University VIRIN: 240801-N-NO201-1001.JPG Photo Gallery