On the surface a good tale of self defense.
Employee working late, store was closed and bad guys (2) broke in and were confronted by employee. Store in bad neighborhood. Employee defend his person, shooting one bad guy and refraining from shooting the other, called police and waited with 2nd bad guy at gun point. No over the top heroics, simple self defense.
Nice job to the employee. (Worst the employee did is 'violate' a company policy. But a small business is unlikely to have any detailed policy. More than likely I would guess the owner would be ok with an employee CC closing up shop in a bad neighborhood.)