Civillian to CRO, STO, or ALO

Here is some helpful information (see attachment) about the Battlefield Airmen Sponsorship Program (BASP) for civilians wishing to become a CRO, STO or ALO.

I have a couple questions that someone may be able to answer. With the introduction of the BA Prep course, how does this fit in the timeline of a civilian pursuing one of these positions? Is the BA prep course only for enlisted personnel or is it for officers as well?

Thank you in advance.