This crime took place in Walnut Creek, California at the OC Watch Company. As you can see in the video, the two robbers walked into the jewelry shop pretending to be construction workers. They handed the boss a clipboard and asked him to sign off on something. That's when one of the men pepper-sprayed the boss and an innocent customer.
Undeterred, the boss was able to pull out a gun and scare the criminals off before they were able to complete the robbery. Well done, boss man.