The US Military is soliciting research into the development of UAVs that can sense toxic industrial chemicals and are capable of "rapidly detecting threats, assessing them, and acting decisively to negate the threats". They hope that having robots detect whether the chemical WMDs are real or imagined will improve their operational effectiveness in the field. The chemical toxins detection would be part of the Military Applications in Reconnaissance and Surveillance (MARS) project which is already working on Unmanned Ground Vehicles (UGVs) that can detect toxic threats. I wonder if the UGV program has looked at Natalie Jeremijenko's pollution sniffing robot dogs? The flying robots sound like they'd be useful to the EPA as well.