At first glance, it doesn't make any sense: If you can disarm a knife-wielding mugger, why can't you disarm your electronic mugger?

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In October 2009, he shot and killed a knife-wielding man who stabbed his girlfriend and a neighbor, according to published reports at the time.

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The incident stood in contrast to an Aug. 11 altercation in which police fatally shot a knife-wielding man in broad daylight near Times Square without injuring pedestrians.

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He talks about dealing with "mostly drunken teenagers" but he did on one occasion help disarm a knife-wielding trespasser at a stately home before handing him over safely to the police.

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The school's vice-principal (Richard Roundtree) menaces the hero like a cop grilling a smart-alecky gumshoe, and the distant sounds of cheer-leaders are heard as Brendan is pursued through the schoolyard by a knife-wielding goon.

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