Your question is somewhat confusing. By "in the police field" do you mean get a job as a police officer?
Ms. Berjis is licensed to practice law in the State of California. The laws of your jurisdiction may differ and thus this answer is for informational and educational purposes only and is not to be considered as legal advice. Since all facts are not addressed in the question, this answer could change depending on other significant and important facts. This answer in no way constitutes an attorney-client relationship.
Why not aspire to something better. We are in the age of computers. How about learning about 3 D printing which is huge.