Some stick up kid thought he had him a soft target sticking up some random Metro PCS business.
That place probably had a few hundred bucks cash in it tops. That little fool probably would have scored less than a grand tops even if he was successful here. Most people pay with debit and credit cards now, very few people paying with cash in those type of businesses.
The stick up kid better be glad the store employee was more interested in disarming him and neutralizing the threat than actually hurting him.