In what way did the 9mm fail? The bad guy was wearing body armor. Shots to the extremities be it from 9 or .45 aren't likely to have any different effect on the terrorist. Stopping shots to the melon would have identical results from either cartridge. A rifle would be the first choice in that situation but the officer didn't have the time to retrieve a long gun.
Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.
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