It depends on who you want to work for. Some states like PA, most departments want you to put yourself through so it would be a good idea.
Other states don't have that, and the department will make you go through their academy even though you already went through one so it would be a complete waste of time. It all depends on the departments you are looking at and the state in which you live.
Pittsburgh Pirates- 1st place NL Central 7/15/11
They've got us surrounded? Good. Now we can fire in any direction, those bastards wont get away this time
An amateur will train until they get it right. A professional will train until they can't get it wrong.