Not sure they would work on ammo. They would already be burned out by what is on the officers belt.
Combining genetics with rigorous training, the dogs learn to identify different levels of explosive odor, so they can tell the difference between, say, a concealed firearm and multiple pounds of explosives. That level of discernment matters, especially in a situation like the Thanksgiving parade, where the Vapor Wake dogs will need to ignore the weapons law enforcement will be carrying.


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