Vanguard - Drug Sniffing Dog Season: 3

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Published 11 Apr 2010
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Vanguard Season: 3 Episode: 6 Vanguard contributor Janet Choi explores how a drug sniffing dog is trained t...
Vanguard Season: 3 Episode: 6 Vanguard contributor Janet Choi explores how a drug sniffing dog is trained to find contraband at high security prisons.
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