I’ll go out on a limb and guess you have absolutely no knowledge or experience with these positions.
If they need a Spanish-speaking applicant, then they will only hire a Spanish-speaking person for that position. Though some departments may have paid a stipend for bilingual officers in the past, I believe few do so today. To the best of my knowledge, every police officer and firefighter needs to be CPR certified, at a minimum. They will not pay you extra for it. Most fire departments now also require full paramedic certification.
If they are paid so well to do so little, why aren’t you doing it? Please apply, do it for a year (if you can even qualify), then tell us all about how easy it is.
Here’s a primer on some of the requirements for paramedic certification alone.