"I feared for my life...It was a split second decision...It was me against him...I would have died if i didn't shoot and kill him or her!" ...Said the only person with a nightstick, handcuffs, a taser, a police radio (for back-up) and a gun (that can be used to "Wound", rather than "Kill" )...and probably a back-up gun, because you need to be able to frame them by making the argument that "They where reaching for my back up gun.....So I had to shoot them with my primary gun; I had no choice...
