When a police officer fires his gun, he must fill out a lot of paperwork.

Correct pronoun errors? I don't see any.

I don't see any errors -- assuming that the police officer is male.

I suggest changing the sentence to:

When police officers fire their guns, they must fill out a lot of paperwork.

The structure of the sentence leads to an unclear image in terms of timing. I would add to Ms. Sue's version of the sentence.

When police officers fire their guns, later they must fill out a lot of paperwork.

Although I may be unique in my imagery, I had the image of "Bang, write, bang, write, etc." Adding "later" avoids this image.

To check for pronoun errors, we need to review the sentence and identify any pronouns used. Pronouns are words that take the place of nouns in a sentence to avoid repetition. In the given sentence, we have the following pronouns:

- "his" - refers to the police officer

Now, let's determine if there are any pronoun errors. Pronoun errors can occur when pronouns do not agree in number or gender with the nouns they are replacing, or when it becomes unclear what or whom the pronoun is referring to.

In the sentence, the pronoun "his" correctly agrees with the noun it replaces, "police officer," in terms of gender and number. Therefore, there are no pronoun errors in the original sentence.

If there were any pronoun errors, you could correct them by ensuring that the pronouns match the nouns they replace in terms of gender and number, and by making sure it is clear what or whom the pronoun is referring to.