Ngoc Thanh Le knew his line of work was dangerous so that's why, a family member said, he kept a handgun behind the register of his westside convenience store. The man that patrons and friends called Papa was forced to use the gun Monday morning when an armed robber tried to hold up the mom and pop store in the 9800 block of Westpark. Le was critically injured in the gun battle. The robber, whose identity was not available, died at the hospital after he tried to flee in his car and wrecked it just a block away. "Every store...