1.   Develop next generation explosives detectors.

2.   The passenger-screening techniques will be used to select people who will be matched to their bags or who will have their luggage screened by an explosives detector.

3.   One of the new devices, an explosives detector for carry-on bags, uses radio waves to create a magnetic field around the object being tested.

4.   The explosives detectors frequently return false readings, Szabo said.