Researchers are developing lightweight, automated sensors that can provide long-range detection and automatic reporting of chemical and biological agent hazards.

CNN: DOD deploying hazard-detection network

Novel nanosensors will allow for the rapid detection, diagnosis and prescription of antidotes to deadly biological or chemical agents--such technologies could ensure safety of both armed forces and civilian populations.

FORBES: Nanotech Takes On Homeland Terror

Chemical and biological sensors already in place on the National Mall will be supplemented with radiological detection equipment, including radiation pagers on the belts of some law enforcement officers.

CNN: Security at record high for WWII Memorial ceremony