Threat Agent Cloud Tactical Intercept & Countermeasure, or TACTIC, is a United States military research program whose goal is to detect, classify, and neutralize airborne biological and chemical warfare agents.
The goal of the program is to provide a system that can rapidly detect and identify the presence of a typical threat cloud and provide a countermeasure to that cloud that will kill it before it reaches the intended target.
[1]The program's goal is to be able to detect and identify CWA/BWA threats within the time frame of one minute.
Research includes such methodologies as: Upon successfully determining the nature of the CWA/BWA threat, "technologies that mimic the seeding of rain clouds will be developed for particulate bio-agents, and technologies that react with chemical agent vapor will be investigated.
"[2] When an effective system for both identifying and countering the CWA/BWA threat is engineered, DARPA will then provide a prototype which will be vigorously tested in aerosol chambers.