Defcon Level Warning System | Private OSINT Intelligence, Alerts, News Defcon Level Warning System | 2023 Threat Monitor on Twitter: "Due to the presence of a suspected Chinese high-altitude surveillance balloon over U.S. airspace, the OSINT military readiness level for North America has been changed to 2. https://t.co/Z37N3J1DMR" / Twitter Due to the presence of a suspected Chinese high-altitude