Develop an explosive trace detector with a limit of detection less than ten picograms 
for military and common homemade explosives. The system must also have enhanced selectively 
to maintain a false alarms rate of less than two percent. The system shall be a particle 
detector that samples from a surface. The system may be a desktop system, but must be easily 
transportable and no greater than 40 pounds. The time to run a sample must be no greater than 
30 seconds. The system must be operable while plugged into an outlet or running on a battery 
and the battery life of the unit must be 4 hours or greater.

These dogs are amazing but we need to do better than this: