What are you supposed to do when you kill an intruder in your home?

Assuming you live in an area where you are legally allowed to shoot and kill someone who is trespassing on your property, What’s next?

Do you call the police? Do you call a funeral home to dispose of the body? Do you need to show CCTV evidence that it was an intruder?

(to those FBI agents watching me type this, feel free to tap into my screens. This is just out of curiosity and haven’t actually had this happen to me)