samples from dale's car. >> i just took him -- because there wasn't really much else to take. >> bill schneck took paint samples from the boot and the car and placed them on slides with an immersion liquid. this eliminated any air trapped between the sample and the slide. using a polarizing light microscope magnified up to 1,000 times, schneck saw the paint was a lead chromate paint. >> and i contacted the national institute of science and technology and received a paint chip known standard on a '74 camaro. >> using a scanning electron microscope, schneck now did a three-way comparison. he examined paint from the boot, from the car, and from the file sample of a 1974 camaro. all were identical. and with this evidence, dale bradley was arrested and charged with bryan ruff's murder.