I spent the five happiest years of my life in a morgue. As a forensic scientist in the Cleveland coroner’s office I analyzed gunshot residue on hands and clothing, hairs, fibers, paint, glass, DNA, blood and many other forms of trace evidence, as well as crime scenes. Now I'm a certified latent print examiner and CSI for a police department in Florida. I also write a series of forensic suspense novels, turning the day job into fiction. My books have been translated into six languages.
I have absolutely no idea.
I have no idea--are you referring to utility companies marking gas lines, etc? My agency has some flags but we haven't used them recently. I suspect if an agency uses different colored flags it might be some internal coding that they use. Sorry I can't be more help.
I'm not sure what you mean by post certified?
Sure, you can send it to: Lisa-black@live.com
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I can’t speak to this guy’s course specifically, but deception detection training is often offered to detectives and law enforcement personnel. I sat in on a two day course through my department once, just to use in my writing.
Interesting idea, but again I don't know. I don't know what liquid is used for the tests, so that might affect things.
Departments have access to larger (county, state, sometimes federal) fingerprint databases, though it's still not like you see on TV. DNA analysts can now obtain a profile from 'touch DNA', someone simply touching an object. And video surveillance systems have become commonplace but also much easier to use with better clarity.
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