As with J-huskey above, I am not aware of any grant programs for training funds. That is not to say that there are none out there.
Certain venues and 3rd parties do offer discounts and free add-ons for MIL or LEO attending certain classes such as our LE courses at ALTUS.
If you are just wanting a piece of paper saying you went to school somewhere, you do not have to be picky. If you are wanting to maximize your skill sets and get tools you would use in your work environment I would encourage you to vet several potential instructors and their POIs. Sometimes even government based schools with high name recognition can be mediocre to bad depending on the instructors rotating in, etc.
Good luck in your quest. Many are in the same boat and some even pay out of their own pockets the same way most LE snipers end up buying a lot of their own equipment.
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