Global Biodefense  September 3, 2021 The Biodefense for the 21st Century (BD21) program is working to design, develop, and deploy networked detection systems that continuously monitor the air, collect real-time data, and employ data analytics to detect anomalies. DHS has identified the need for further research and development of commercially available biological detection and presumptive identification technologies to enable timely detection and characterization of airborne bio-threats. The biosensors will be deployed both in indoor and outdoor urban environments to conduct real-time monitoring of biological threats. The redesign is to occur over 15 months and will take place in 2 phases. […]