What are you meant to hunt with THAT? Giant killing machine is star attraction at shooting sports convention

It is less than a fortnight since six people were killed and Congresswoman Gabrielle Giffords terribly injured in a shooting spree in Arizona.But the Tucson massacre has done nothing to deter the 16,000 expected to attend the 33rd National Shooting Sports Foundation's Shooting, Hunting and Outdoor Trade convention in Las Vegas.The annual event (which goes by the all-too-accurate acronym SHOT