An 18 minute skills training video that demonstrates how to screen people for external contamination using a hand held Geiger Mueller Detector. The program is designed for individuals assigned to conduct mass screening for contamination from radioactive materials following a large scale incident. The program may be used as pre-incident training or intra-incident just in time training. Supplementary training material on utilization of ion chambers and alpha scintillation detectors is provided. A downloadable graphic illustration of the pro