CHICAGO (CBS)– Canine Deputy Nitro joined the DuPage County Sheriff’s Office Canine Unit.

Nitro, 3, is a German Sherpherd-Belgian Malinois who is trained to detect over 250 permutations of explosives, including gun powder.

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The new canine deputy will be stationed at the DuPage County Courthouse with Deputy Frank Carragher.

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“This dog will proactively seek out bombs and guns. We’ll use it for those acts of violence but the biggest value of a bomb dog is what it prevents,” Sheriff James Mendrick said. “It’s hard to quantify something that doesn’t happen but Nitro is there to make sure it doesn’t happen.”

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Nitro will join two other bloodhounds currently in the Canine Unit. Four additional canines are currently being trained to sniff out drugs and cadavers will join.