Mary Katherine Higdon worked at a gun shop and had firearms training before the night of the shooting.

At least 1,500. Modern semiautomatic weapons can discharge a round and load the next bullet into the chamber faster than even the nimblest of fingers can pull the trigger.

UP cop was asked to load gun during surprise inspection - his act goes viral | WATCH The incident took place in Uttar Pradesh's Sant Kabir Nagar district when Deputy Inspector General of Police ...