...ends when homeowner shoots at intruders.

It doesn't get any simpler than that...

Story here

The story is sparse, but the necessaries are there.

Step 1: Keep 'em out
Step 2: Failing step 1, be prepared to shoot the intruders.
Step 3: Follow through.

Lather, rinse, repeat.

Now, it's unfortunate that they got in, unfortunate that they didn't suffer injuries; but they left, and nobody in the house was harmed. That's a good day in my book... not the best day, but a good one.