Robbers pick wrong target; two shot, one killed by gun-toting victim

The single greatest deterrent to crime yet devised. Are you listening Chicago???

Two would-be robbers forgot to ask their victim a key question:

Do you have a gun and know how to use it?

The 21-year-old Bartlett man's answer might have prevented the two 16-year-olds from being shot.

Instead, an exchange of gunfire between the Bartlett man and the robbers Wednesday night left one teenager dead and the other wounded.

Alyssa Moore, a spokeswoman for Memphis police, said authorities have not released the names of the robber who was killed or the other teenager, who was in noncritical condition.

The robbery portion of the case is still under investigation and charges are pending. State prosecutor Thomas Henderson said Friday the office will not prosecute the potential robbery victim, saying his actions appear justified.