Taylor,
You would not needed to take college course to be able to learn sign language since you said it will only related to being a Police Officer. You could take sign language classes at college, like most hearing parent take theirs at when they have a deaf child themselves. Or you can asked a deaf friend of yours to teach you some sign language like I did with my ex boyfriend who is also a police officer. It was very helpful for him.
You would not needed to take college course to be able to learn sign language since you said it will only related to being a Police Officer. You could take sign language classes at college, like most hearing parent take theirs at when they have a deaf child themselves. Or you can asked a deaf friend of yours to teach you some sign language like I did with my ex boyfriend who is also a police officer. It was very helpful for him.