Sonny Archuleta triple murder in Aurora: Guns purchased legally (55-57)

The Aurora theater shooting preliminary hearing of James Holmes and the tragic mass killing at a Newtown, Connecticut school have spawned calls for new and stricter gun laws. Against this backdrop comes news related to the bloodiest metro-area incident so far in 2013 -- an Aurora triple murder in which gunman Sonny Archuleta was killed. Turns out all of the guns used by Archuleta were legally obtained.