Three applicants want a certain job very badly

There are three open positions for the job. The employer takes the applicants to a hallway to give them a trial to see if any of them are worthy of receiving the job. He hands a gun to the first applicant and points to a room in the hallway and says "Your wife is sitting on a chair in that room. If you kill her, I'll give you the job." As soon as the applicant opens the door to the room, he refuses to shoot his wife. The employer says "Sorry, you're not worthy of getting the job." The employer then hands the gun to the second applicant and tells him to kill his wife, who is also sitting in a chair but in a different room. The second applicant enters the room and points the gun at his wife. After a few moments of hesitation, the man refuses to shoot her and exits the room. Again, the employer says "Sorry, you're not worthy of getting the job." The employer then hands the gun to the third applicant and tells him to do the same thing. The applicant enters the room and closes the door. As the employer is waiting for the man to use the gun, he suddenly hears a loud scream that lasts for half a minute. After that, the third applicant exits the room. The employer asks "What happened in there?!" The third applicant replies, "The gun only fired blanks, so I had to kill her with the chair!"