Two cases within a couple days where concealed handgun permit holders stopped robberies

One customer was killed here, but without the permit holder in this case, multiple customers might have been killed.  St. Louis (occurred on Tuesday night, December 2, 2014):

. . . Police said three gunmen entered the bar about 10:55 p.m. Tuesday — one of them shooting into the ceiling as they came in — and ordered everyone to the floor. Wade ran toward the former police officer and shot him in the thigh. 

The ex-officer, who worked for the department for several years in the 1970s and has a concealed-carry permit, fired back, shooting Wade in the eye and Davis in the shoulder, police said. 

Another male customer, 73, was shot in the ankle and was in critical condition; a fourth male victim, 66, was released from the hospital after receiving treatment for two shots to his buttocks. 

Davis and a third gunman, whose identity was unknown, fled in a stolen Mazda, investigators said. Police found the wounded Davis at a hospital; he claimed he had been shot at a different place. A manhunt continued for the third man. . . . .

Las Vegas (occurred on Thursday, December 4, 2014):

Las Vegas police arrested a man after he allegedly tried to a rob a Red Lobster restaurant on Thursday night. 

A call was made to police around 9:45 p.m., reporting a man had entered the Red Lobster . . . near U.S. 95, with a handgun. 

The man, who has now been identified as 28-year-old Dillon Webb, allegedly threatened customers and employees and took the drawer from a cash register. 

Witnesses said the man ran out the back. A customer from the restaurant, attempting to flee the area, was confronted by the suspect in the parking lot. The customer, who was armed with a handgun fired one round. Webb reportedly dropped the drawer and ran. . . .

Thanks for Tony Troglio for the first link.