Has everyone forgotten that box cutters were used to cut the throats of the crews in the planes that crashed into the buildings on 9/11? Box cutters are deadly weapons, often carried as "hide-out" weapons by those thinking to do harm. The Lehi police were justified in shooting anyone brandishing a box cutter, especially if the assailant had already been warned to stop. If someone brandished a box cutter at me, and I were armed, it would be the last thing that person would do. Nothing says a person has to be cut before shooting.
R. Scott Ormond