The FLIR IBAC 1 is a fully automated biological agent detector that alarms in less than 60 seconds when an airborne bio-threat is present. It uses UV-Laser induced fluorescence to discriminate biological organisms from background particles, reliably detecting all four classes of bio-agents at concentrations below 100 ACPLA with low false alarm rates. The IBAC 1 can operate integrated into a UAV or robotic system, or as part of a network configuration to form the “first tier” of a building/critical infrastructure protection system. Its four stages work together continually to monitor the environment for the presence of bio-threats, alarm upon detection, collect and preserve samples for confirmatory analysis, and transmit data to command and control centers. The IBAC 1 offers a flexible, field-ready solution for bio-aerosol monitoring.